For me i do every time i received my salary i less first the 5% for my savings and the rest it will spend or invest because i do that for my future i always save first before to spend.
Me also i do saving money first before to spend because i know that saving money will brings us to be rich in the future also i have a lot money for my investment to have passive income. I want that my money helps me to earn.
yeah, it is one of good way to manage money because we do not know when we will need money the most in the future.
beside that, we can save 10-15% of our money to do a business. it can be selling something needed in your society.