15, diagnosed with type 1

My doctor says we caught it early and I'm most likely in the prediabetes phase. I'm just starting on insulin but it's only 3 units of Lantus right now.

I'm trying to get myself to inject it but can't bring myself to it. The idea of it just seems too weird, whenever I'm about to I stop and wait longer.

Any tips for newbies? I found out about a week ago so the whole thing is pretty new to me.

EDIT: my blood glucose has ranged from 70-273 over the past week and I have an A1C of 7.8