If you want to learn a reliable method to build new habits into your daily life, I strongly suggest you enter free Tiny Habits workshop. It is designed and run by B. J. Fogg, a Stanford scientist working on behavior change in both academic and business settings.
Tiny Habits is a 5-day, low effort online course. You define 3 habits you want to practice by following specific (and unusual) instructions. You're done after a week, hopefully with a new understanding and skill in building new habits yourself, for the rest of your life. Workshop only deals with 3 habits, but of course you will almost immediately start more if the method works for you.
So far more than 7000 (!) people have done the workshop. I just finished, too, and I'm a fan! I have searched for this kind of results for more than 4 years now. Tiny Habits is the first systematic 'technique' for changing behavior that has actually sticked with me. Results are very encouraging.
I won't yet share the details of the method. I think it's best if you sign up for the next available course and read the instructions doc you'll be emailed. It describes the method in its entirety. Enjoy!
PS. Kudos to Andrzej for sharing Tiny Habits with me.