You can make utilities for yourself where you can put all your calculations and worksheets. This will reduce repetitive work to a great extent and help you save time for some other productive and constructive work. Apart from them, there are a countless number of other ways to use spreadsheet such as planning your tax, investment, cash flows, managing phone numbers and contact details and the like.
It is easy to create a budget for your personal finances, but it is not as easy to always stick with it. For that reason, it might take you a few months before the total you are actually spending matches up with the recommended amount from your budget. This is okay if you are not in debt because there is no rush. However, if you have creditors calling your home at all hours of the day, it might be within your best interest to meet with a debt relief counselor or to schedule and appointment with your financial advisor.