Grammatical / other advice for my essay? (very short)?

If I could relive a past experience, I would not change anything. I am grateful for all of the moments I've had in my life, happy and sad. My struggles add to my knowledge and understanding. I take something from every mistake I make and use what I have learned to my advantage. My faults increase my awareness and inspire me to accentuate my strengths. Each decision and encounter I face helps make up who I am. If I could relive anything from my past, it would be to experience again the happiness I felt in any certain moment.