There are a bunch of things that really improved my life and they aren't all tech related.

    Java/.NET => PHP => Ruby
    Laundromat => Owning my own * single most amazing change
    Not caring about personal finances => Saving up
    Sit all day => Geekdesk (I stand about 1h30 every day)
    Pharmaceutical programming => Startup programming
    Restaurants => Cooking classes
    Playing WOW => Quitting cold turkey
    Windows/Linux on home built boxes => Mac
    Seeing my wife clean the house all the time => Paying for cleaning