The way that you think can actually make or break who you are. How successful you are in your personal life and professional life all can be affected with the way that you think and perceive things. Although it is not always easy to stay positive, it is vitally important that you at least try to do so. You can do this by learning how to change the way you think and through that you can change the way that you perceive things in life.
You need to be able to recognize that you need to change your way of thinking. If you aren't willing to do that then there is no sense in trying to change. You need to believe that your thought processes are in need of changing for you to change. If you are always having thoughts about how life is horrible and nothing ever good happens in your life, you need to recognize that there is a definite need for change in the way you look at life. This kind of thinking actually blinds you from seeing reality.
Make sure that you try and find out what situations in your life are causing your destructive way of looking at the world. If you are a person that has a world of confidence in what you do outside of your job but is totally lacking in feeling confident on the job then you need to find out what it is that is making you feel this way so that you can figure out what changes in your thought patterns have to change.
Once you have found what it is that is giving you all the negative thoughts you need to teach yourself to replace the negative thoughts with some positive thoughts. You need to come up with images that make you feel good, that put a smile on your face, images that reflect positive feelings are going to help you override the negative feelings that you have. For example let's say you are at an interview and you see everyone else there for the same job. Your negative mind might tell you that there is no way that you'll get the job because these people are bound to be better than you. Stop thinking that, instead replace it with thoughts of what skill or skills are your strongest and think only of those skills. By doing this you will help override the negative thoughts in your mind.
Be a creative thinker. First off, get rid of that thought that you are not creative. Every human being is a creative creature. So get into the habit of asking yourself questions, be inquisitive and get yourself use to asking the why of things or the how of things and jot these things down in a journal. You can use these things later on down the road to help remind yourself that you are creative and have creative thought. If you have ideas then let yourself explore them and practice voicing them with others. Make sure to do new things that will keep your mind stimulated and be inquisitive about new things.
Don't be satisfied with the norm or status quo. Always be willing to recognize that there actually might be a better option than the one everyone else takes. If you think the way you or someone else is doing something is the only way to do it, stop yourself and see if you can't find an alternate way to do it. This could even be something as simple as finding a route that less people take to work, even if it's longer, it's still not the route that everyone else takes. Always analyze things and see if you can't find elements of surprise in and around what is normally something that is mundane and boring. If you come up with new and interesting alternatives then focus in on those instead of what everyone else is focusing in on.