Repetition Is More Important Than Time Invested
When building habits or learning new skills, repetition is more important for enforcing behaviour than total time invested. Repetition leads to automaticity. Rather than striving for perfectionism, it is better to start with a small foundation and iterate on top of that, maximizing the total number of repetitions completed. This allows you to build momentum and helps lead to the Matthew effect. However, it is also important to keep in mind that deliberate practice is required to improve when building up repetitions.
This applies also for avoiding behaviours as well. When reducing time spent on social media, the key isn't total time spent undistracted, but reducing total repetitions of giving into temptation. For building a habit such as meditation, each time you refocus your mind when you become distracted, that is a repetition for doing better.
Strategies for increasing the total number of repetitions:
Break things down into smaller parts
Lower the barrier/criteria of what is considered a repetition
Lower the feedback time