First, you need to record all financial receipts in order to understand what amount you have. All sources of income should be taken into account: salary, bonus, part-time work, money from renting an apartment, and so on. With unstable earnings, it makes sense to form a budget when you know exactly what amount you have, Which is why financial planning is a very important procedure for those who want to remain in a good financial position for many years to come. Personally, I do this with humaninvesting.com .