Ask HN: What are your best life hacks/best tools in life/time savers?

I would like to know wich things you consider to give you and advantage in any area of life.

Some things I would add to the list:

1) Program launcher (launchy/quiksilver/gnome-do/katapult/etc) instead of icons

2) Vim as an editor (mastering its usage)

3) Gesture search in android

Not currently using but I want to try:

- Polyphasic sleep (perhaps everyman)

- Colemak keyboard layout