Do you want to make yourself better? Yes, of course. How can you make it happen? You must accept impermanence. It is a positive thing because each moment is an opportunity for you to change in life. If everything is permanent, how would change be possible?
Nothing can be held, even for a second. If that is so, what is the benefit of attachment? The concept of impermanence helps us to let go.
Everything, including your thoughts and your body, is subject to impermanence. That is a fact of life. Each moment brings change, so every moment brings the opportunity for a fresh start. If you can live with impermanence, it will be very easy to let go of attachment and suffering.