Multi-select problem: How does the next paragraph end?

How to become an optimally functioning person
Select a goal you can commit to.
It's been said that practicing for 10 , 000 hours on something will help you perfect a skill. If you can't put in that kind of effort, you'll likely fail.

Pick from: a. Oftentimes, though, it may be easier to get passionate about the thing you want to do. Whatever your goal is, motivate yourself to do it. b. Keep in mind working for a specific goal is a way to sharpen your skills as you see fit, which is more effective than doing the same task over and over. Recruit friends and family to stand next to you at meetings. c. If you give it more time, you could possibly miss out. Instead, set a goal that you can accomplish with time and lots of practice, as long as it's attainable. d. Therefore, choose something that you're willing to put in time and effort to work towards. For example, you'll need a lot of time to train if you want to run a marathon.
d.