The time we have might go by fast

We don't know when our life will be over.
The time we have might go by fast - sooner than we might think. 

So, don't fight with the loved ones.
Don't complain so much -  don't criticize others or yourself. 
Instead of constantly talking, and worrying about the problems, find a solution and try to solve them peacefully. 
Try to enjoy what you have.
Stay away from the people who make you feel miserable - instead, spend time with those who make you happy - who make you feel loved. 
Try to be a good parent, brother, sister, teacher, and a good friend. 
Try to be a better person - Instead of focusing on becoming important, influential, or powerful.
Most importantly, do not hurt anyone - especially those who love you.