I kind of feel bad what should I do?

Alright so today me n my sis signed up for this company called herbal life at first I seem excited to work their because my friend always talked bout it saying u get paid alot n I agree to meet him today in the afternoon but wen I got home I started to regret it and I just message him telling him dat I dont think Ima go n that I feel srry but I dont think the job Is right for me but he didn't answer bac yet cuz its kinda early in the morning.Do u think he's gonna be pissed at me.wat are some things I can do incase he gets mad?