No words of advice, because I don't think you need them - these things come and go.
I keep sane by having more that one interest, I guess - for me it's either the guitar or Wing Chun. At the moment, because I'm in a band and that's all pretty new (well, for the last 20 years or so!!!), the guitar is taking most of my free time. But I know full well that will change, and the martial arts will start taking up the bulk of my time, with the band taking a back seat.
Life is a journey, not a destination, Grasshopper...