Our mind is like a garden. You can't plant tomato seeds and expect cucumbers to grow. It's the same with reality. You can't be negative, put yourself down and surround yourself with a negative environment and negative people, and then expect to have a positive, wonderful life by some kind of magic. Exactly like in a garden, what you planted is what will grow. So if we want a positive life, we'll have to change the way we talk to ourselves. Speak to yourself kindly. Even if you made a mistake! Did you learn something? Then move on. The next thing is to change our thoughts, about ourselves and about other people. Drop the self-righteousness and the judging. It isn't your job, and between you and me, when you judge and criticize other people you're really doing it to yourself.
And if you feel that the people around you are dragging you down, tending toward negativity and low energy, then maybe it's time to find different people. It's a matter of free choice and daily work, and that's creating reality at its best.
You become the thing you identify with: a thought, a feeling, an action. And out of that identification you draw toward you similar people, similar events and similar situations. There's a reason people say that money goes with money, or that the beautiful people go with the beautiful people. Like attracts like. That's the law here. You can complain about it, or you can become the thing you're asking to be.
You have to believe in yourself. You have to believe that it's possible. We create our own lives, and it starts with the way you look at life. If you think there aren't enough opportunities and that life is hard and unfair, that's what you'll experience in reality. But if you believe that there's abundance, that there are opportunities, then those things will exist in your life! It means holding on to an almost imaginary way of thinking. A person has to have a vision, and it's better if the vision is even a little unrealistic. Everything is imaginary until it exists in reality. It's a matter of free choice, and that's the headline over reality itself.