Often times we have many things planned and we get none of it done. And that's okay. In a world where everyone is on their phone and there is so much to do, it is vital that we stay in the present moment and not worry about the things we need to get done. It will not be the end of the world if you decide to do nothing for the day. Being present means enjoying the time with what you have, the people that surrounds you, and simply that moment.
You have to go with the flow of life. You cannot get mad about what isn't, just focus on what is. Stressing about things you have no control over is a waste of time! When you are stressed out it cause others to stress because of the energy that you possess.
Have fun with life. Enjoy it. It's important how you spend your time. Every second you spend mad it could be spent being happy. Embrace the life you were given. The key to life is being balanced. You must work hard, but also be able to have fun. Understanding that everything happens for a reason and what's going to happen will happen. If you don't get things done that's okay, just don't turn it into a bad habit. Remember life can be very unpredictable.
You will thank yourself later in life...do what you can!