I have advice for me and for you:

Do not compare yourself with other successful people who have higher qualifications more than you because you will feel whatever you had progressed, still not equal or above other succeeded people. However, compare yourself to yourself. Where are you before, and where are you now? Oxymoron when you linked your happiness with something such as; buying a villa, or a car or a good position. If you do not get it what you desired, that mean you are not happy. Then you will go in a dark circle unlimited, and you can not easily out from it. Everyone have big ambitions, we just look at results only we do not think one moment, how we will get there? What are the ways that we will take it? Is it easy or difficult? We have to ask many questions for ourselves before to start. Did we have patience and power to face any risks? If you have ability and faith to face challenges and difficulty, go forward with preparation for fighting for your dreams. Often we are optimists people because we don’t need to hear bad things about our capabilities. And we keep continuous cheating ourselves. We just are saying and convince ourselves everything will be alright. No problem to be optimistic, but also we have to discuss truly with ourselves about our bad habits or any weakness points because if we stick optimists we will not even be trying to develop ourselves.