This is a very important aspect @josediccus. Some times after making upvotes and I have exhausted it, I plan to wait for at least 12 hours before voting, but then I move around and see other posts that I find so difficult to ignore.
I know my upvote level is minimal and can sometimes most times not noticeable, so I look out mainly for good contents that has not really been visited with an encouraging upvote. There my upvote can count more than on contents that has been upvote by various whales. Although I still cast my upvote on contents like that, but I mainly lookout for under voted contents.
You have the right mindset when it comes to curation and that's what matters if you ask me. But its not easy for the vote to actually go round because it is limited. There are many contents but the vote weight is actually limited, however it is, I believe we gotta do what we gotta do.
It is very very very limited, deep down this is what we all go through while curating, thanks for bringing it up for a read