In my experience you never grow out of an insecurity, but you can identify them and learn to live with them.
If you are just learning about manifesting, you will learn that you CAN grow out of an insecurity. And in fact, you must. Good job for starting on the path of least resistance! I am confident you will do well. Feel free to message me on discord or hive chats if you need a little friendly guidance! I'm sure all of us here will be able to help each other. I think the community is kind of new. I'm not really sure. I just found out about it. LOL
RE: Insecurity & Confidence: my experience