Just use the 50/20/30 rule
The 50/20/30 rule is one of the simplest ways to ensure you don’t spend all your money on espresso martinis.
US Senator & financial expert Elizabeth Warren claims that your pay cheque should be split three ways:
50% should go to living expenses (rent, groceries, etc)
20% to financial goals (savings) and
30% to non-essentials (travel and meals out)
Following this simple rule will get you fiscally fit in no time!