Although ATMs have made this a little obsolete, you can still write a check to yourself to get cash from your checking account or move money between accounts. If there are no ATMs around, or the machines charge a fee, you can write a check to yourself and endorse it by signing it on the back. Just be sure to wait until you’re at the bank before you endorse your check, as if you lose an endorsed check, someone could cash it, and you would lose the money.