I don't know why I was given the ability to live
What makes you question why you are alive?
I've been lucky you might say.
It's understandable that you wonder about life and why you are here. You should embrace your life and be grateful that you have had the opportunities that you have had. Use your luck to show compassion and generousity to others that aren't so fortunate.
Nah I'm going to meditate on all this and do yoga.
Sure thing, I hope you have fun and can ponder more about life's mysteries as you meditate. It's really healthy to contemplate and wonder about things. The more we philosophize, the more we can understand about the world.