I spend a lot of time in front of the computer, but I am also very particular about my pens and paper. When I want a pencil, I only use a Pentel P205 0.5mm. I've had a single P205 for over 4 years now and it's never been lost or broken. For pens I've finally settled into the Pilot Hi Tec C 0.25 or 0.3mm in blue or black. I have two all-metal bodies for the cartridge I got from Kickstarter, the Render K by KarasKustoms and the P1 by PremierePen. I find that having a nice pen encourages me to write down my thoughts more often and makes my notes much more organized. For paper I'm less picky but I like Muji products for random notes.

TL;DR get a nice pen, it's the best.