Living Paycheck to Paycheck

I work a FT job and a PT job and am struggling to keep afloat. I do not get my nails done, go out with friends, ect because I cannot afford to. I 100% am on my own financially (rent, car payment, ect). I have started shopping at a grocery store that is cheaper ($50 to fill the fridge versus $100) so that'll save me some. I do have my account to take $100 a month to my savings, but I had to touch it and feel guilty. Any other tips for not living paycheck to paycheck?