If you have negative people around you who do nothing but moan, try and put you down and completely undermine everything you do then that this will have a negative effect on you.

If you surround yourself with positive people who believe in you, offer the right support, give good advice and are generally upbeat then this will surely have a positive effect on you. Not saying that it will make you achieve more but it will give you the confidence to attempt things you would generally be nervous about or give you the ability to believe in your own abilities. You might not achive the desired results but I reckon you will have much more chance.

If you believe in yourself and have the guts to take risks you are doing something positive already. Just having enthusiasm and putting effort in to things you do can create positive vibes. That's how I tend to go about things. Makes me happier in myself too which can only be a positive thing.

Do not believe too much in that Uri Gellar stuff. You have to make things happen for yourself in this world. Sometimes you just won't succeed becuause that's life but then you move on and try again. More positive than wallowing in self pity which is what a lot of people I know do and they have the life to reflect that but they are too busy being miserable to see they can change it. Waste of life.