1. Pick a Planning tool

a) Digital: If you prefer a digital system, do some research on to-do list apps and digital calendars. You will surely land on a reasonable app from App Store/ Play Store.

My personal recommendation is Microsoft To Do(Simple and free).

b) Pen and Paper: If you like going old-schools, get a notebook. A simple notebook will do the trick. However, some specialized notebooks (e.g. bullet journals) are also available in the market.

c) Hybrid: If you want to harness the benefits of both the above-mentioned systems, a hybrid system is the viable solution.