I find that many perceive and think that letting go means they have to change. Moreover, of course, we do not like change; we like to stay in our comfort zone even if our comfort zone is uncomfortable. I mean who likes struggle, suffering, and pain, which we often unconsciously associate with change. The truth is change is not required, only reconnecting with our True-Self through awareness is needed.
It does not matter how well, or bad your life may be, you can always let go, try it just once and see what happens. Even the best life, lived well, can be lived more fully.