I was working on one field for like 3 yrs and got bored.. Totally furstated, I was offered fulltime after one year and I toook it . Thought now my life is set but after 2 yrs you had nothing new everyday same shit , no learning no gaining . I was so frustated that i decided to quit the fulltime job and change my technology and now i am working as a contractor and i am loving it not sure how long will it last but so far i love it. It might help you. Sometime benefits or salary or luxury does not play any role. You simply get tired and all you have to do is find something new even if you have to start from scratch it worth it.