I have been here before myself, what helped was not changing my job but rather to live a healthier lifestyle. Get up at 5am, jump in the pool/shower, spend some time being grateful, meditate, journal, then hit the gym and start your day. Make sure you take enough supplements to combat a vitamin deficiency and eat better, cut out sugar, dairy for a month+ and see how you fair. I went vegan for a 3 months and it really kicked my body in shape.