Feeling lost is not a nice place to be. Is it part of the process? I don't know. I do see you have conflict within. You feel stuck but say you know you aren't. You say you have a purpose but don't. You have a great life but it hurts. They contradict each other and this is going on inside you.
Try to be confident of your truth whether it's ying or yang. You're sending out mixed messages and you will just get mixed messages in return. They seems like riddles. I often found myself solving these riddles only to realize I was creating them. In the end I realized it isn't what you do, it is who you are being, no matter what you are doing, that counts. This is how you can find yourself. warmest regards.