“How exactly can I be more grateful with my life?”
Acknowledge the past, but move on
I'm not saying that you should ignore the past, naturally. That's impossible.
What I'm saying is that you should be aware of your past mistakes, past heartbreaks, past failures and past frustrations.
Use them as stepping stones. Acknowledge the fact that they did happen in the past and utilize the lessons you learned from them in the present so that you won’t experience them in the future.
Be more grateful of the bad as well!
be aware of 意識到，知道；
He became more aware of the things that started that tension off.
Sometimes we are not consciously aware of these feelings.
Businesses are now more aware of the importance of the "pink pound".
learn from 向…學習，從…獲得[吸取]； 效法；
There is a great deal to learn from Hal's expert approach.
Looking back helps insofar as it helps you learn from your mistakes.
Be humble enough to learn from your mistakes.