Are you asking about stories/comments upvoted by you ? In that case, your profile on HN has a link for the 2 already at the bottom. I noticed this recently so may be a new addition.
https://news.ycombinator.com/upvoted?id=gautamsomani (only you can see this btw)
https://news.ycombinator.com/upvoted?id=gautamsomani&comment...