OK so first of I'm going to say that actually the spirit is actually very nice. He never did me anything wrong. I first accidentally called him while trying to answer some questions by using a ring attached on a string. But there was a time that I was experiencing some mental problems. And I decided to think some very bad things about him because I was afraid of him (and him potentially coming if i think about him) and I wanted to deal with my biggest fears.
I was comforting myself that he wouldn't actually come like this - just by thinking about him (because before it had always come when I was concentrating on the ring in question). However it came and this time it didn't wanted to leave for a long time. And I believe he was quite pissed of on me. Yesterday I think he finally find comfort.
However I'm still scared if I'll accidentally call him again. Like right now I'm really scared thinking about him. I mean yesterday I felt he find peace and I felt really positive (piece of me) too but since I was disappointed too many times in life and I guess other things piece of me didn't find peace. Piece of me was still scared and I don't know.
If your point or question here is how to get rid of the spirit here's a few tips:
Try and talk to him
Most spirits make contact with human beings because they need help. Some even want to warn you about something that may potentially harm you. You shouldn't fear a spirit as it will only make it stronger.
Kindly ask the spirit to leave
If you really don't want to even feel it just kindly ask him to leave your home. However, do not threat it or anything similar because changes are it will get mad.
Don't do anything
This is actually a good option in some cases. If the spirit doesn't disturb you, doesn't seem harmful, just watches you, then don't do anything. You don't have to cast a banishment spell over something that isn't even harmful. If you still don't want him to be near you, then just ask him to leave.
Bless your home
Blessing a home is a pretty good idea to defend one against bad/harmful energies. Saying some prayers will going around your home with sage burning ( or sage incense ) or sprinkling Holy Water against walls and floor, is a great idea to keep your home safe and sound.
In cases that are a bit more to the extreme side, a banishment spell would be the best option. It will banish the spirit from your home and not allow it to come back. I say " extreme " because i only use this option when the spirit persists and doesn't leave and/or is potentially harmful. I recommend you studying and reading about banishment spells a lot before casting one. If you know nothing about this topic and you try to cast one and you fail, you will be gaining more problems.
Trust yourself! Having no fear and having trust in yourself is key. Potential harmful spirits won't even look at you if you have plenty of confidence and no fear. Don't be scared, remember, you have more power than the spirit does.