Before you start searching for ways to use automated file encryption, you should ask yourself the obvious question if you need automated file encryption or not. Automated file encryption is a great security step, but it could come at a price. What happens if you forget your password and you can't decrypt the files, or if simply the tool you used breaks and it can't be fixed?
In both cases you lock yourself out of your files, which is a high price to pay for your security. However, if there are tangible security risks for your files – i.e. many people access the same machine and your files are at risk, then you do need to use automated file encryption.