Interest can be calculated for loans or for investments. For a loan, interest is the amount paid to the creditor for granting the loan to you. For an investment, interest is income that the investment earns. Interest for a loan is usually expressed as an annual percentage rate, which is the annual rate that is charged for borrowing the money. Interest on an investment is usually expressed as a percentage. The two main types of interest that can be applied to loans are simple and compound interest. Simple interest is calculated by multiplying the interest by the principal by the number of periods. Compound interest, however, is the most commonly used method of applying interest to a loan or investment. Compound interest is interest calculated on the original principal plus interest calculated on the accumulated interest from previous accounting periods. The rate at which the interest accrues, or accumulates over time, depends on how often the interest is compounded. Interest can be compounded annually, monthly or quarterly. Compound interest is not beneficial for those in debt. If a person carries a credit card balance on a high-interest credit card for which the interest is compounded monthly, the interest payments alone could be hundreds of dollars per month. Compound interest is advantageous to investors, because the interest that is earned each accounting period gets added back to the principal and earns more money for the investor. The annual compound interest formula is P(1+i)nP{\displaystyle P(1+i)^{n}-P}. In this formula, P = Principal, i = annual interest rate in percentage terms, and n = number of compounding periods. If the interest is compounded more than once per year, such as monthly (12 times per year) or quarterly (four times per year), the formula must be adjusted, The formula for compound interest that is compounded multiple times per year is [P(1+i/n)nt]P{\displaystyle [P(1+i/n)^{n*t}]-P}. In this formula, P = Principal, i = interest rate, n = number of compounding periods, and t = the number of years for which the money is invested or borrowed. You can use the rule of 72 to figure out how long it will take to double your money on an investment that is earning compound interest. Divide 72 by the annual interest rate your investment is earning. The answer will tell you how many years it will take for your investment to double in value. For example, if your investment is earning a 3 percent interest rate, calculate how long it will take to double your money using the equation 72/3=24{\displaystyle 72/3=24}. In 24 years, your investment will have doubled in value. Interest rates on investments do fluctuate, so the rule of 72 should be used as a tool for estimating the future value of your investments.
++++++++++
One-sentence summary -- Understand the meaning of interest. Define compound interest. Learn the formula for compound interest. Understand the Rule of 72.

When worries pop into your head throughout the day, don't entertain them. Tell yourself you will focus on them during a designated time later in the day. During your daily worry period, dedicate 15 to 30 minutes to thinking about your money concerns. If it helps, you might jot down the worry to review later. Then, at the set time, pull it out and work your way through the list. Try to schedule your worry period towards the late afternoon or early evening, so it doesn't distract you during the day but also doesn't keep you up all night. Before, you may have thought you couldn't do anything about your money worries. Postponing your worries helps you become aware that you actually do have control over them. After you've gotten adjusted to isolating your money worries to a specific time of the day, take the next step and start trying to resolve them. Consider each item on your list and write out a few practical steps you could take to reduce the worry. For example, if you're worried about losing your job, you might decide to get on-the-job training or continue your education so that you are a more marketable candidate in case of unemployment. Take some time to evaluate your worries about money and consider whether they really make sense. If you find yourself clinging to irrational beliefs about money, make an effort to replace them with more realistic or goal-oriented thoughts. Consider what your values are and what's really important to you. For example, you might find yourself thinking, "I would be happy if I just had more money." Instead, focus on a specific goal, such as, "I would like to make enough money so that I can go on a trip to California next year." If you think, "People will never respect me if I don't make enough money," instead tell yourself, "I am not interested in gaining the respect of people who only care about money. I want to be around people who care about me for who I am." Over a span of time, you will notice that money worries aren't interfering with your day as much as before. At this point, you can slowly start to dial back the minutes you allot to your worry period. If you were doing 30, drop to 20, then 10, and so on.
++++++++++
One-sentence summary -- Put off your money worries until a set time period. Problem-solve your money worries. Identify and confront irrational money worries. Reduce your worry period over time.

These diets work by stimulating your cat's metabolism to work harder and burn fat, while protecting your cat's lean muscle. Researchers found that lean cats have genes coding for a higher metabolic rate, and in turn discovered certain foods' molecules are more likely to switch these genes on more than others. In contrast, research showed that calorie-restricting diets turned these genes off, making it more difficult for some cats to lose weight. If your cat cannot seem to lose weight on a reduced-calorie dietor has hit a plateau in her weight loss prior to her target weightthen ask your vet about a metabolic diet for your cat. Hills is the main producer of metabolic formula diets. Follow the manufacturer's instructions based on your cat's target weight. Another metabolic diet option for your cat is the "catkins" diet, which is a low-carb, high-protein diet that works especially well for overweight cats that have developed feline diabetes. One study showed that 68 percent of diabetic cats on the "catkins" diet were able to come off insulin as compared to 40 percent of those on a standard, high-fiber weight loss diet. Your veterinarian will test for feline diabetes in your overweight cat and discuss this option with you. Always follow the manufacturer's instructions for your cat's target weight for a high-protein, low-carb weight loss formula food.
++++++++++
One-sentence summary --
Understand what metabolic diets do. Consult with your veterinarian. Consider the 'catkins' diet for your diabetic cat.