How can I stop procrastinating and cultivate a variety of good habits?

Use Habit Stacking: 'After I [existing habit], I will [new habit].' Design your environment so desired behaviours are the path of least resistance book on the pillow, notes open before you sit down, phone in another room.

Identity change is more durable than behaviour change: shift from 'I'm trying to study' to 'I am someone who studies.' Every small action is evidence that reinforces that identity.