Bad habits

I've decided that playing alone all the time--which is how I prefer it--leads me to perpetuate bad habits. I think I have at least these:

1. My timing is erratic and I should be practicing with a metronome.



2. My strumming seems to be based on getting the strum in the right place, rather than getting the right-sounding strum.



3. I fret the low e-string with the pads of my fingers, rather than the tips.

I'm sure everybody gets bad habits, but I think my solitary style reinforces certain ones.