Once you earn enough to cover your needs and have enough left over for saving, investing, and some wants, you don't have to budget in the usual sense.

You can use as simple a template as (Ramit Sethi's) 5-10% savings for near-term discretionary expenses (think vacations, etc.); 15-30% investing for the long term; 50% for needs; and 10-30% for things that let you enjoy life.