I spent a decade rebuilding the same terminal workspace every morning until one bug made me rethink everything. After killing the wrong process amid eight unlabeled tabs, I froze while my server went down. A coworker finally asked, “Why are you not using tmux?” That question hit hard—tmux, the terminal multiplexer I’d casually nodded at in tutorials, would have saved me from that mess. tmux runs as a background server with named sessions, windows and split panes you can detach from and reattach to later. You get one terminal window but infinite workspaces. Sessions survive disconnects. Windows act like tabs. Panes divide the screen and keep their processes alive even if you close your laptop. Six commands cover 95% of daily needs: new sessions (tmux new -s work), vertical splits (Ctrl-b %), horizontal splits (Ctrl-b "), pane navigation (Ctrl-b + arrow), detach (Ctrl-b d) and attach (tmux attach -t work). Add “set -g mouse on” to ~/.tmux.conf and you can click around. I tracked my own time: tab hunting ate 39–52 minutes a day, reconnecting dropped sessions another 22–35, rerunning commands cost 47–61. That’s about 2 hours 10 minutes lost daily. After tmux it took me two minutes each morning to set up, and zero for context recovery the rest of the day. I finally used those reclaimed three hours to ship stalled features and clear my review queue instead of wandering through tabs. tmux didn’t make me faster—it stopped making me slower.