Most people overcomplicate self-improvement.
Especially when considering mindset shifts.
How to change your mindset:
Self-Reflect - Eliminate bad habits.
Choose ONE good habit and begin a daily practice.
Relentlessly practice this ONE good habit each day.
Once you get there, you can then focus on:
Optimizing or expanding your good habit.
Starting ONE additional good habit.
Relentlessly practicing both habits.
The key to success?
With every action, determine which one of these steps you are stuck at.
And then make a plan to progress to the next level.