For a big project, or even a tiny project you can insert a life line that you can then frog back to an you are left with "live" stitches that are safe.
When you've finished a row that you are confident with you can thread a piece of scrap yarn, fishing line, thread, non-flavored dental floss on to a tapestry needle and then thread it through the stitches on the needle all the way across the row. Then you continue knitting leaving that life line in. If you need to frog you can rip out the yarn to where that life line is and then you are assured that the stitches will be safe. Put a new life line in every pattern repeat or as often as you want to - just be sure to only have one in at a time - using scrap yarn can distort the stitches a bit, but all will be resolved with a good wash and block.
The other thing you can do is frogg back a row or two before where you need to have the needles and tink.
I often do what Mason does and go VERY slowly and pick up the stitches as I rip out that last row!