Also if I have to do an unknown unknown which could result in getting stuck for a while I will schedule loads and loads of time for it. Like make a reasonable e

Also if I have to do an unknown unknown which could result in getting stuck for a while I will schedule loads and loads of time for it. Like make a reasonable estimate and then double it. Then it often turns out that you solve it in a fraction of the alloted time and you feel awesome! Definitely dont compound the stress by adding time pressure if at all possible.