This will show your Angel Investor that you indeed are a rational thinker and concerned about the money as well as the truth. If the Angel Investor cannot trust you your chances of being funded are nil. An angel investor is betting on the jockey not only the horse. As an entrepreneur you must be honest with yourself as well as your financial partner. They want to make sure you believe in what you are doing and that you also have risked your own capital, time and energies into the new business. Angel investors want you to succeed and often they also like to give their input and if you end up taking their money for your startup, the need to realize that their input needs to be taken seriously.
Thirdly, you can start use a spreadsheet program to schedule your time or organise all kinds of stuffs. You can use it to un-clutter you life by having different checklist on spreadsheets. After you learn the basics of spreadsheet programs, you can come up with more creative ways to use it in your daily life. You can even use a spreadsheet program to assist your weight loss plan. Use it to record your daily food intakes and you weight.