Step 1: Whatever you are letting go, say it's for the best.
Step 2: Truly believe that you are doing the right thing and move on with your life.

.... If only letting go was that easy
Your heart must clench and throb and stutter within your chest.
You have to push your selfish need into the deepest and blackest void in your mind.
Try not to cry, then proceed to cry heavily and uncontrollably.

Letting go is removing the safety from your life into the world of change.
It is a bitterly received acceptance.
But most of all, it is sacrifice.
Exchanging your happiness for theirs.
It's the purest, rawest, and the saddest form of love.