Do not allow anything in life take away your inner peace, joy and self-confidence. No sickness, no mistake, no failure, no negative people, no circumstances, no bad weather, no empty pocket, no bad memory of the past, no future concerns, no worries, no fears, not even disability.
How can you do it?
It's simple and the answer lies in the power of words.
When facing a difficult situation, say to it firmly and calmly; you're not allowed! you're not allowed to take away my inner peace, inner joy, self-confidence. :)
Find examples of those annoying/challenging situations in your life and say that sentence to it and you will feel that you become more powerful than those situations because you truly are, you just forget it sometimes.
When you master this skill, you become always strong, unstoppable, unshakable, unbreakable and easily risk-taker.