To the extent that you can find ways where you're making predictions, there's no substitute for testing yourself on real-world situations that you don't know the answer to in advance. ↗
If the means were available, we could trace our ancestry - yours and mine - back to the first blob of life-like material that came into being on the planet. ↗
People often remark that I'm pretty lucky. Luck is only important in so far as getting the chance to sell yourself at the right moment. After that, you've got to have talent and know how to use it. ↗
For example, one way of giving yourself a strong incentive to reach your goal is to commit to pay money to someone if you fail. Better yet, you can specify that you will have to pay a certain sum to a cause that you detest. ↗