How long have you been doing this approach of self studyDabble with both, and whichever one captures your interest, focus on that... if you start getting burned out, switch over to the other thing. I'm kind of on that scattershot approach myself, simply because I get bored if I do the same thing for too long... so I might work on front end for a week, switch over to backend, and then learn a bit more about another language, etc.