[brightball]

Reduce your cost of living. Simplest and most direct approach that is easy for you to control. Penny saved is a penny earned and all that.

[HeyLaughingBoy]

This can be a good approach, but it's fundamentally limited. If your living expenses are $X/month, the biggest increase you can get by reducing expenses is $X/month.

OTOH, if you focus on producing something, you can potentially achieve $X*BIGNUM/month