i keep a very simple "notes.txt" file and just append to it; i add a timestamp at the start of every day. literally no other formal structure i put nearly ever

i keep a very simple "notes.txt" file and just append to it; i add a timestamp at the start of every day. literally no other formal structure i put nearly everything in it that is interesting. snippets of code, bits of debugging sessions, notes from meetings, little reminders. it's a single file that my editor loads in milliseconds and it's very searchable i've been doing this for over 35 years (... starting over at each new company). having a "dump" of knowledge at my fingertips has saved me hours, many times