Good habits

Sleep

Spend more time on activities with long term rewards, e.g. learning new skills, new friendships, creative hobbies.
Spend less time on activities that give empty dopamine highs, e.g. social media.
Learn to forgive yourself if you relapse from doing good habits and avoiding bad habits.
Avoid triggers such as state of minds like boredom, anger, self-pity.
Have risk-free activities for when you are not in the mood for productive work, e.g. watching documentaries, drawing, reading etc.
Fix places and activities, e.g. working at the office, reading in cafe's, sleeping in bed.

Cue, Craving, Response, Reward: The habit loop. As time passes, rewards become associated with cues. Time and location are important cues, use them like I will [habit] at [time] in [location] rather than something like I will read this month Also change the environment to trigger cues for good habit - one space one use is a good rule. Similarly, making cues for bad habits invisible will help drop them.
Make the habits you want to develop clear, and keep score of them visually via for e.g. a progress bar.
Bundle something you have to do, e.g. some chore, with a good habit.
Make hard habits attractive by associating them with positive experiences.
Have accountability partners.
Aim to change your identity rather than being goal oriented, e.g. I will be a good researcher instead of I will write X papers.
Remember that motivation comes after the habit has started.

Concrete notions of habits under org-habit? e.g. going to gym etc.
Notes under habit formation were from a summary video on Atomic Habits, forgot which one exactly. It also mentioned that in a study, the group practicing the former had a 91% success rate of going to exercise, compared to 30% in those who relied on just plain motivation - putting this under this section since I don't have the proper citation.