a sin and a good deed

Came across these beautiful words found at a comment on a site:)

"I do believe that a sin; bad deed can take you to jennah and a good deed can take you to hell. (Forgive me if Im mistaken I think that’s a hadith;not sure) I believe this to be so true. That one sin can be the sin to take you to jennah by always repenting and getting closer to Allah and feeling remorse. As opposed to a good deed that can make one so prideful and feel they have done enough infront of God. Allahualim."