Somewhere I Belong
The art of a true master.
To me the most important thing I can think of is to have the song you want ready to hear when you want to hear it. To have that playlist ready so when the mood hits you the song is there for you.
To find a file or a folder which you made and kept in your computer years ago and probably forgot about it is something worth having.
It's an absolute necessity to keep records of my clients interactions with me. Cause I know. Sooner or later when you least expect it. The time will come. When...... Your boss asks you something that happened months ago and for which you better than a ready answer.