Unless you want to be a saint and donate all your money to charity then there will always be people less fortunate than you. Though perhaps donating some money to charity will make you feel better about it? And of course be a good thing to do. But to ruin your mental and physical health by working yourself silly just because there are others who have to go through the daily grind in worse conditions would be a real shame.
Some people spend their money on fancy cars or big houses, you spend your money on 2-3 months off, think of it that way.
Also, perhaps you should look into freelancing sites like toptal? I don't have experience using them myself but from what I hear if you are good enough to pass the interviews then they have a wide range of work available and you can choose how many hours per week you want to work. Apparently the pay is not as good as you would get in New York but it might be enough to live on if you have a simple life. Perhaps consider working 20-30 hours a week after your break so you don't have to feel guilty about using up all your savings?