- Never again write and record songs w/ your guitar tuned a whole step down and the e string drop tuned. You may get away w/ one track, but you're likely to run into intonation problems when it's time to record overdubs.
- Name tracks before you record on them. Alright, I do that now. But I sometimes forget. So - name tracks before you record on them. And use names as descriptive as possible.
- Bounce every individual track. Virtual Instruments and effect plug-ins manufacturers do go out of business and/or drop certain products.
- Keep the unprocessed files. Not an issue now that HD's can hold more than 10 GB, I guess...
- Don't sell old gear you don't use anymore,
just store it.
- If you think you're not making any progress, re-visit an old project or two...