yay 40 subs , i always say to myself, if you put all those people in a room its a lot. my only problem with 40 subs that it takes really long to get 41, then 42 etc :/ its hard getting started
If it helps just think that all the bigger youtube channel out there started out like you. You've gained so many so far don't worry about how long it will take to get to 42, 43, 44 etc just celebrate and enjoy your accomplishment