What I have found is I will tap for the amount of time that feels right for me. Also while you're tapping, say some affirmations to yourself like. " I accept that I am feeling this way and I love myself anyway" " I accept that jealousy and resentment are visiting me at this time, but it is time for them to go away" " I release these feelings into the air and I will draw in love and trust instead"
I have issues with that sometimes too and it can make one feel weighted down and ugly on the inside. I will send you some healing for your heart.