What is the no. 1 best way to stop procrastinating and do stuff?

Design your environment and schedule so that starting your most important task requires the least possible decision-making and effort. Decide the night before what you will do, when, and where. Have everything ready. Sit down at the same time in the same place.

Start with two minutes. Do not wait to feel motivated motivation is a result of action, not a prerequisite for it. Consistency of condition beats intensity of willpower every time.