All this in mind

Many say all this in mind. It's all true. After all we only use on average 30% capacity of our brain.
But the question is: How to use my mind to take a lot of benefits?
The answer: It's simple and difficult at the same time. I will divide the explanation.
It is simple because: just use logic. Example: if I breathe through your nose, because my mouth emits snoring? Then I conditioned my brain to think about this logically, and the snoring stops. That is the logic is something that the brain accepts unconditionally. You can apply the logical reasoning for almost everything.
It's difficult because: it requires training.
Condition your brain to work for you, not vice versa.