Most of us are forgetting what was doing yesterday or what have to do today and tomorrow. You don't need to waste time wondering about important things to do.
Take a notebook and start to write a set of things you have to do on a certain day.
Great motivation is to deselect things you have already made.
Regarding to this, we will not forget about anything and become more productive.
If you have a free day, take in on. Do not search for things to do.