The moping around and being sad is an essential part of getting over a guy. Don't let anyone tell you otherwise. But, it shouldn't last forever. Eventually, you've got to be the one who says, "This is enough." Decide when you've had it, and when it's time for you to get better. Then move on. Good rule of thumb? Don't grieve a relationship for more days than months you were together. If you went out for a year, it's ok to be sad for a couple weeks. But eventually, you've got to get over it. Eventually, all the sadness will just get boring. Decide you want something more. Decide you want to be happy. Do something little, but that feels big for you. Let it be a statement of your freedom. Color your hair in a new way, or chop it all off. Do something crazy, or unexpected, like singing karaoke with your friends. Pick something to celebrate your freedom in a surprising way. It'll help. Tattoos can be great ways to commemorate a big change in your life, like a break-up. Or unfortunate decisions that you'll be stuck with. If you've had a design in mind for a while, but your guy didn't like it, then go for it. If you just want to get some ink to be cool, then maybe you should think about it for a while. Some relationships can hold you back. Was yours? If so, consider making a bigger change in your life. Use your new freedom and your new time to improve yourself. Decide to change your life for the better. Try moving to a new place, especially if you shared your old one with your boyfriend. Move out and explore a new neighborhood. Did you sacrifice things so that you could work on your relationship? Are you doing what you want to do in life right now? If the answer is no, then make a big change. Switch jobs. Move to a new town. Do what you want to do. Sometimes, when you break up with someone, you can lose a lot of your friends as well. If that's true of your relationship, you might need to find new friends as well so you can hang on to your social life. Don't let a break-up ruin your ability to hang out and have fun. Hang out with different sorts of people than you might normally hang out with. If you're a sporty-type, hang out with some artsy kids. If you're a smart kid, hang out with some jocks. Give some people a chance. You deserve to be happy and feel confident. Work on developing yourself for a while, instead of worrying about your relationship. Do what you want to do. Live the way you want to live. Let yourself be a little selfish for a while. Make decisions based on what you want. Work on things like school, and developing your own identity. Be yourself. Hang out with your friends. Make memories. If you're young, there'll be plenty of time to worry about dating. Even if you're not young, it's good to take a little time to worry about other things. Don't worry about finding a new boyfriend for now. Worry about living your life. Stop worrying about "the one." Lots of people date for a long time before they have a single serious relationship. If you had one, count yourself lucky. Take a bit of time before you start looking for a relationship that you consider serious and lasting.
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One-sentence summary -- Put an end-date on the sadness. Make a little change. Make a significant change. Make some new friends. Be selfish for a while. Don't rush back into another relationship.

The sell-by date may also appear as "not to be sold after" or "EXP." This date is, at most, 30 days from the day the eggs were packaged. Eggs that are kept refrigerated and are not broken should be good for at least 1 month beyond the sell-by date. The sell-by date appears as month/day in the United States. So eggs that must be sold by March 15th are labeled 03/15. "Sell-by" refers to the last date the eggs should be available for the public to purchase. Eggs should be pulled from the shelf after this date. It does not mean the eggs are bad or rotten after this date. The best-by date may also be labeled as "use by," "use before," or "best before." The best-by label must be within 45 days of the date the eggs were packaged. Try to use these eggs within two weeks after the best-by date. "Best-by" refers to the period of time eggs are at their peak freshness, with the best texture, flavor, and binding and thickening properties. It does not mean the eggs are bad or rotten after this date. Sell-by or best-by dates are not required by federal law (some states require them, other states forbid them), but all eggs must be labeled with the date they were packaged. This date usually appears as a 3 digit code using the Julian date calendar. This means eggs packaged on January 1st would be labeled 001, eggs packaged on October 15th would be labeled 288, December 31st 365. Look for the Julian date on the end of the carton. You'll see the plant code (a letter P followed by numbers) indicated where the eggs were packaged, and beside it you should find the Julian code. The European Union also requires that eggs are marked with a pack date. Even if eggs are sold loose and not in a marked carton, the consumer should have access to that information. Once an egg has cooled in your refrigerator, it is important to keep it at the same temperature. A cool egg in a warmer environment begins to sweat, which can encourage bacteria to grow on the outside of the egg. Because the egg shell is porous, it is sometimes possible for the bacteria on the shell to pass into through and contaminate the egg. To prevent temperature fluctuations, store your eggs in the coldest part of your refrigerator, not on the door. The temperature is more likely to fluctuate on the door when it is opening and closing, which may cause your eggs to sweat. If you receive your eggs unwashed and at room temperature, they do not need to be refrigerated. Many countries, including most European countries, keep their eggs at room temperature. This is safe because eggs are laid with a protective "bloom" which naturally keeps bacteria out. Once the eggs are washed, however, they must be refrigerated. Also, in most European countries, the hens have been inoculated against Salmonella prior to laying their eggs. If you have egg-laying hens and you're wondering when they will go bad, you can refer to your country's guidelines for freshness. It's a safe bet your eggs will be good for at least two months, if not more. If you're not sure how long you've had your fresh eggs or if you think they are older than two months, learn the signs of bad and old eggs to help you decide whether or not you should use them in your cooking.
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One-sentence summary --
Check the "sell-by" date on the package. Check the "best-by" date on the package. Use the 3-digit code that tells you when the eggs were packaged. Throw out any eggs that have been refrigerated and then sat out at room temperature for two hours or more. Use the packaging guidelines of your country to determine how long to keep your own eggs.