Starting with a bit of science. Studies will show that the ability to delay gratification as kids is a leading indicator on how successful of an adult will be.
Save 1/2 of any pay rises or bonuses
How much money should I save?
This is a very broad topic to discuss but I think about it a lot. From my experience, the amount changes over time and also the potential percentage. I think the generic recommendation is to save 10% or 20% which is a good guide, but it may not realistic if you are a student or perhaps have already retired.