When we are children, kids we have a lot of gifts. But we lose them when you grow up because of our method of thinking.
I know a lot of cases where someone lost his gifts. It's because we thought what others would said if we told them what they feel, what tehy'll see if we are talking with an astral spirit etc. They would think that we are crazy so we started to ignore the gifts, the other beings. And it's like a gate. We didn't used the gate for a long time and it became full of rust and was destroyed.
That's how it happens. Or we think that we don't have thos abilities and are only our imagination. It'll have the same effect. We made the subconscious think that we don't have those powers and we lose them this way.