I've been eating my boogers since I can remember and can't force myself to stop
What caused you to have that habit?
I started eating them in childhood and its stuck ever since.
You should try to end that habit as it is considered disgusting. If you continue, you may accidentally carry out that habit around others. If this happens you will be looked at negatively, which can affect your self-confidence.
I'm finding it harder to stop, but I know you are right.
I am glad you can see it is bad. It might be hard at first but you can try to carry some issues with you at all times and remember to use them when you need.