If you can't answer this question, then self-improvement is actually a form of self-rejection.
In this scenario, every bit of effort says: "I'm not good enough the way I am."
If you need to achieve something in order to feel good about yourself, then you've missed the whole point of self-care.
Self-development is not about trying to become worthy; rather it's about expressing your inherent worth.
So ask yourself: "What's good about me?" Then spend time contemplating the answer, and once you get to your YESness, you'll understand why some people can seemingly experience joy for no apparent reason.
"There are no prerequisites for worthiness." Brene Brown