losing subscribers

I don't know why but as of late i am losing subscribers since i got to 50 subs i have gotten up to as much as 57 now there is a down spiral of sub's and im back down to 52 what do you suggest i do? Its very depressing and i feel like quitting i jus felt like i should do something new for the...

Basically what the title states. Apparently I have lost 20 subs, but according to the graph I have only lost 10 (each spike is -1 sub). is this a glitch or something, or due to the recent 'purge' that youtube did that removed subs from lots of people. Also haven't had a sub in almost 3 weeks...