Once you have written what you want to change down, you know have power over the item. You can keep it or you can tear it up or throw the paper away.
You are in control of the paper, and if you accept that fact, you may realize that you are in control of the actual situation. You can keep it or you can let it go, the choice is yours.
Start with a little, then work up to something larger. Like any muscle, letting go is a skill that gets easier with practice. I find this particularly helpful with thoughts and emotions that I need to release. I'll just ask myself to let go for an hour. Or an afternoon. Or a day... Baby steps.
Do you know if you change the direction of an airplane by just one degree, it will arrive in a whole different country? Small works.
Moving things along is being in the natural flow of life and it involves releasing so the new can come in.
Do not fear the change, embrace it and remember that you are in control of the process and the consequences of your action will be positive.