Interesting you mention self-upvoting. Until the last couple months I only upvoted others, not myself. Recently I have though. However, if I had a delegation I would not use it on myself ever.

I had a delegation for quite some time and when it started I stopped upvoting myself entirely because I was earning enough from curation that it made more sense to save the voting power for others. Running Open Mic takes a lot of votes, so much so that my voting power was always low until @ausbitbank created an account for others to delegate to that only upvote my manually curated upvotes for the openmic tag.

It was so cool he did that without even telling me until it was done. That way I could reduce my voting slider and keep upvoting hundreds of people a week and the other account he created boosted my vote.

It's people like that doing cool things like that that make you realize you're on the right path.