If you don't learn easy lessons, they get harder. External problems are a precise reflection of your internal state. When you clear inner obstructions, your outside world changes. Pain is how the universe gets your attention. You will know you've learned a lesson when your actions change.
Wisdom is practice.
A little of something is better than a lot of nothing. Others are only mirrors of you. You cannot love or hate something about another unless it reflects something you love or hate in yourself. Your life is up to you. You always get what you want.