Honestly, no. I haven't doubted or second guessed myself when it comes to emotionally heavy scenes. Not to sound like I'm at master at it or anything like that, however most of mine are based in areas that are incredibly relatable to most people.
For example, I just posted a two page emotional scene on my scene. It starts with a scene of danger as a vicious angry character [Hec Hound] is threatening and yelling at a beloved old wise character [Elder Zorro]. I show Zorro sad and sympathetic towards the Hound despite him looking more and more intensely dangerous, and then I suddenly flip the mood as Zorro takes charge of the scene and it's revealed that all the Hound anger is coming from a place of fear and manipulation. And I end the scene with the Hound begging for help and Zorro saying it'll be up to the Hound to find the forgiveness from within inorder to be released from rage.
A scene like this, I think is deeply relatable to most. Everyone gets scared and angry. A snarling beast is more likely more scared of you than you are of it. And how self help has to start with the person needing help to realize it and seek for help before the healing can begin.
You'll need well developed characters. Think about the very beginning of Pixar's Up. They make you fall in love with Ellie and Carl. You know both of their interests, their goals, dreams, you see them struggle and their hardships, and you see their love for one another which makes it all the more difficult to see Ellie pass. Pixar is pretty much the best at getting audiences to fall in love with a character quickly and setting up that emotional scene flawlessly. You're homework to get good at emotional scenes is to watch LOTS of Pixar, over and over again, and then ask yourself why did this scene make me feel, what emotions is it bring out, and how did this scene achieve it.