... because you won't get it back. Basically, live in the present. Not in the past, or in the future. The present moment is the only one you can change. It is the best thing you can do to be happy. This little bit of wisdom, I learned in my 20's. Some people learn it early on in life, others later. I know that knowing this has helped me deal with unexpected things that happen. Learning to let go or accept the things you have no control over can be a challenge, but it's a skill that can be mastered with practice. Love today, do what you love, just be happy. Wish you a happy end of the week.