My method is described in a comment but also here:

I use

• Trello for daily tasks(mostly towards my professional evolvement, like do that course, or spend some time with you side project)

• Calendar for what matters in terms of time(go to the doctor at 5pm)

• I am tracking habbits with the Seinfield method(like eat an apple every afternoon, no excuses)

• Sometimes I find it useful to note them down to a scrappy paper, just for the visual-kinesthetic part

https://lifehacker.com/281626/jerry-seinfelds-productivity-secret