How can dreams and aspirations positively affect people's lives and their relationships?

Various psychological analyses and researches have shown that dreams and aspirations are not necessarily detrimental but can seriously shape some components of people’s lives. How we think and feel about our goals, if we’re optimistic or pessimistic, can affect whether or not we reach those goals. As our feelings and thoughts are usually related to things and living beings we value, the majority of our life decisions and actions are focused on the realizations of our goals and ambitions.
In fact, having dreams and aspirations greatly contributes to our happiness, because we feel happy when we think that we are one step closer to achieving our goals. When we aspire to improve ourselves in various aspects of life (health, business, or relationships) we are actually measuring our progress.
Thus, psychologists argue that dreams and aspirations positively affect people and their lives by giving them a purpose. Without an end-point, we are lost and have no sense of direction; dreams and aspirations give us something to look and work toward, and they provide some motivation, inspiration, and determination in our lives. The moment we determine what our dreams and ambitions are, we can devise a plan to attain them. Basically, this is how we give meaning to our lives. In science, this is known as positive psychology, in which following our dreams is essential for our well-being and optimal functioning.
Our dreams and aspirations and the pursuit of them can also greatly affect the people around us and shape the way we build relationships. Chasing a dream transforms us into someone who has an interesting story to share with others; it makes us a person with a sense of daily direction and purpose. As a result, we’re more inspired and more courageous to pursue new relationships and meet new people. We have a much more open-minded and positive attitude, and we learn to appreciate all the good things life has to offer, but we also learn to appreciate failure and loss.
It is important, however, to remain realistic. We cannot allow people to “walk all over us” by being positive and forgiving all the time. When we work on our goals, we must remember that having high hopes and having high expectations is not the same. Having big dreams and aspirations and thinking positive is a good thing, but we must also be rational and sensible; we should aim high, but always with a clear head.