While I most probably don't follow the tactics of GTD (haven't read them and don't want to) I aggressively follow a strategy that really works for me : reducing cognitive load. I make a point to commit nothing except the task on hand to my working memory.

When I say "I should remember to", I immediately stop and use a Messenger bot I coded for that purpose

When my wife say "Can you remember to" I immediately ask her to put it into our shared calendar, or I add it to the same bot

When a coworker says "can you do X", we add it as a trello card with the appropriate priority

People start to get used to it, they probably assume that I have very bad memory or that I'm weird, and we make it work :-) I feel very light since I started enforcing these procedures