Sometimes I have bad luck and sometimes I don't How do I get rid of the bad luck?

>rub on your cack for 20 minutes

That might feel good but it really won't help much.

We all have good and bad happen to us. This averages out for most people, and insurance companies make a ton of money off this simple fact. I was going to answer you and say that 'luck' is mostly how we perceive our circumstances, and it is, but then I realized that I do have a better answer for you.

The best way to improve your luck is to improve yourself. The easiest way to do this is to start telling yourself that you can succeed. Do it outloud if you have to. Whenever you have to do something challenging, something you have failed at, start by saying "I can do this". Do that EVERY TIME you do something challenging. Eventually that little voice in your head (don't worry, it's just you) will start telling you "You can do this! Here's how..." and it will lead you to success.

The second best way to improve is not to dwell on your mistakes. When you have "bad luck", something went wrong, right? Figure out what it was. Was it your fault? If so, figure out what you did wrong and think of a way to avoid making that mistake in the future. Plan for it, in every detail, and think of your plan whenever you start to feel bad about that mistake. Make a plan for that situation even if it wasn't your fault. Practice it in your head. Next time... you'll be ready.