tmux is an awesome tool! I’ve used it literally constantly for about a year now.
And guess what! I didn’t know about some very basic commands.
This shows you an interactive screen where you can which session you want to be in:
(0) + 0: 3 windows (attached) (1) + 1: 1 windows
<prefix>( # or <prefix>)
Move back and forth between sessions. Can you imagine!
I usually have a single session with several panes and windows. Now this can scale in a whole new dimension with more projects and ideas. Hurray!