Well, i don't know you but I forget everything. And I hate it. That's why I decided to search for an app that help me to remember things I have to do. I found todoist. You can add events, organize them in different prejects and more things. They also have a website (https://todoist.com) and a chrome extension you can install in your browser.
This app really helps me to organize myself and to organize the day, and offcourse, to not forget anything.
Well, i'm glad to help you on the way to productivity!