This has helped me a bunch over the past 2 years when I had to move from my home state, and when going through some difficult times last year. I just thought about sharing this with all of you.
Don't waste time grieving over the past mistakes. Learn from them and move on!
Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before. Philippians 3:14