If anyone here is like I am, or I used to be. You're probably a mess. And instead of implementing a new plan to change, you would rather waste hours researching to make sure you're doing that thing correctly and efficiently. You want to understand it, which is reasonable. But know this is just a very sophisticated form of procrastinating.
Do something, today - now. Want to get into shape? Make a daily habit of 5 push-ups. That's it, you can manage that. And you might feel like you're not doing enough, but you're doing 35 more push-ups a week than you were before. That's something.
Implement this now. Aim low, don't try to uproot your life. Change slowly, make a time every week to review your new habit and adjust. Small increments. You'll be amazed how it can change over time. But you have to do to know. You can't just be an observer.
Analysis paralysis is terrible. So stop it today and start what you want to start. Want to be a writer? Write 100 words a day. Want to start meditation? 5 minutes a day. Want to start a new diet? Just follow your diet for one meal every day.
Forming the habit is the hard part. So don't burn yourself out trying to form it.
Start today, start now.