Mine, is this one "Picking the right thing to work on is the most important element of productivity and usually almost ignored." from Sam Altman. I take the time each day to prioritize my tasks, meetings, etc.
Libre Logos is open source project that aims to provide free, logos to open source projects and NGOs. Logos can be claimed by eligible projects on a first-come, first-served basis. Designers are invited to contribute to the project :)
