I haven’t had a chance to read all replies yet, so forgive me if I repeat anything.
I too am a melancholic. Actually, I am a
melancholic-sanguine so I “get” both temperaments. Here are my thoughts:
Traditionally, melancholics have made great religious for the very reasons you stated… they love the things of eternity, are able to detach from the world, and tend to have a giving heart.
I assume you live in the US. Our culture does not value the introvert as much as the extrovert. It’s a shame that attitude has gotten even into the Church. It can be painful - trust me, I know. Honestly, I would wilt in a community where
everyone was outgoing and sanguine because I would never get a word in and would constantly feel misunderstood. So it may be a blessing in disguise if some communities are saying no up front.
The reality is though,
any temperament can be called to any vocation (and side note: I just can’t imagine it’s good for any community to have only one temperament). Even with all my love of eternity and lack of interest in “worldly things”, I am getting married this autumn and believe this is the life God designed me, as an individual, for. So keep searching for the right place for you. My fiance loves me for who I am, and I suspect the same should occur with an Order.
Also, here’s a thought. Sometimes we do need to find ways to round out our temperaments. For example, if you know you may be giving the wrong impression by not smiling when you pass a person by, start training yourself to smile. It’s not about being fake, it’s about showing love to that person in a way that makes sense to them.
My fiance is very logical and practical… he doesn’t want a lot of theatrics when we communicate. So I’ve trained myself to speak in a very logical, non-theatrical (non-sanguine, haha) way. I am not faking, just meeting his needs (and he meets mine by being more verbal about his feelings than perhaps his phlegmatic temperament normally would be).
Sorry to ramble on.

I pray all works out for you! You do not have a “bad” or undesirable temperament - quite the contrary!
