Need help with divination/psychic stuff.

I've been practicing only a few months, but I've had psychic stuff for years.

Some of this may feel ridiculous but I'm hoping that's just me.

I'm gonna go in chronological order, somewhat.

I started getting my first deja-vous (I don't know how to spell it, sorry), or that's what I can describe them as, when I was around 8, in 2012. They've always been simple and harmless. Id have dreams of something as simple as a conversation , or watching spongebob while eating tortillas, and it would be down to every last detail- what I was looking at, hearing, smelling, and eating. Then it got weirder. I could feel energies everywhere, I could feel myself being watched, I could feel where rooms had something I couldn't see in them. I could feel some trees weren't what I should go near. I even saw a full body spirit once, right tafter I woke up. All he did was walk across the ceiling, feet down like the air was a floor. He had what I can remember as Athenian style clothing on.

Recently, over the past few years, I've felt like I wasn't the only one who had access to my mind, that something or someone else could read it. I've made mental measures like the visualisation of cleansing and barring my mind every night.

So, my question for anyone who can help; how do I control, develope, and work with this? Or am I just crazy?

Blessed be, and thank you for your time.