30 and now what?

I embraced turning 30 and loved every minute of my birthday month but I sit here now, all birthdayed out and wonder what's next?
I feel like my life is in some kind of weird stage of limbo. I'm not so young anymore, but not so old either! I'm not training for an ironman anymore, I recently got a promotion at work, I've lived in the same house for 18 months (which must be a record for me surely? Dad must be due to help me with another move). I need a new challenge or a new hobby maybe, I get bored and restless so easily and I can feel an itch coming on, need some kind of major change in life, now just to work it out...