Hello,
First, let me say, for one, that I am sorry for your struggles... but also, I want to congratulate you on fighting through them! You are still young an already maturing in ways beyond many elder's comprehension. I, and others, have gone through similar experiences as you, so do not feel alone. My hardest times were between the ages of 12 (many people have spiritual awakenings around the time of puberty as well as physical) and 19.
I also want to say that you should not take what the "psychic" said seriously. I have tested many of these so called "psychics" that ask for money and they have all been fake. You can test by throwing in false information or complaints and see if they can sense something isn't right. The presence you describe sounds like it could be a spirit guide or guardian. I have one. Yours sounds like he/she is kind and gentle... full of positive energy. That's a beautiful thing.
Assuming the psychic was correct, to answer your questions: yes, outside forces can influence your spiritual journey and "luck" if you will. However, I believe everyone has the power within to be the overpowering force when it comes to struggles of one's own soul. Sometimes, it's as simple as thinking positive thoughts. If you are always upset and worried about bad luck or having a hard time, you could very well be putting the bad vibes on yourself. The "dark shadow" could be your own!
I'm happy to talk more with you about guides and any other issues... and share my experience if you'd like. Feel free to PM me anytime.
I hope you find the answers you are looking for.
Be well.
