namuol has covered all the really good points. It's definitely easier to have money by "not spending money" than "making more money". But there are lots of side

namuol has covered all the really good points. It's definitely easier to have money by "not spending money" than "making more money". But there are lots of side jobs you could do. Maybe you could mow lawns or fill out questionnaires online? You could go to car boot sales and sell good finds. Usually devs get the best "pay rises" by finding a new job, though.