Self-improvement can also be referred to as personal development or self-growth. It means taking action to improve oneself, such as learning new skills, setting goals, and working to achieve them. Here are some ways you can talk about self-improvement in Engpsh:

"I'm trying to work on my communication skills."
"I'm setting some goals for the year to focus on my personal development."
"I'm reading a book about how to improve my confidence."
"I'm taking a course to learn a new skill that will help me in my career."
"I'm working with a coach to help me achieve my goals."

Remember that self-improvement is a continuous process and it's important to be proactive in working towards personal growth.