If you have lots to get done and you find that you keep forgetting things a to do list might be a useful tool to start using.
You don’t have to rely on remembering everything, instead you can just write it all down, give yourself deadlines and figure out the things that matter most.
Then, you can start working through the list and keep going back to it until everything is done.
The alternative is to try rely on your memory, keep it all in your mind and risk forgetting to do something that needs to be done.