First stim shot 😕 need tips

So I did my first stim shot tonight. Well I had full intentions of doing it myself but then just staring at the needle made me have a break down. I started balling and just couldn’t get myself to do it. After much back and forth I had my husband do it. I kinda felt just defeated and disappointed in myself. Its going to be a long 11 days. Hopefully tomorrow is better. Luckily the shot wasn’t horrible. It just burned while being injected. Any tips on how to stay positive throughout the stim phase? Especially when things start getting uncomfortable in there?