There are two valuable attributes that I've found to be extremely helpful in my search for my passion and purpose. These two attributes are perspective and awareness.
Perspective, I believe, is the easier of the two to learn. It can be learnt by playing within your life on a daily basis. Put another way, strive to do something different daily. In doing so, you're putting yourself within different situations which can give you new and unique perspectives to your life.
Some examples of daily play to get new perspectives would be as follows. Reading material outside of your normal field of interest. Walking different paths or visiting different places within your local neighborhood to see or encounter things that you might not normally. Whatever your creative method (i.e. writing, drawing, composing, etc), try to create something different daily, no matter how rough or crude it might seem.
Awareness, on the other hand, I've found to be much more difficult to learn, primarily because it almost implies a degree of wisdom to recognize what you are seeing. For example, just because you can see something, it doesn't imply you understand what you're seeing. And if you can't understand what you're seeing then it may as well be invisible to you because the understanding brings the awareness.
The thing to realize though is that there are different forms of understanding. Logical understanding means you are fully cognizant of what you are seeing to the point that you can easily express it verbally to others. Intuitive understanding is much more difficult however. You may feel you know something is important, yet you can't logically explain why at that point in time. Nevertheless, one must realize that this intuitive awareness is just as important, even if you can't explain the importance of what you're seeing.
Awareness I've found isn't so much learnt, as it is fostered or cultivated. To be aware, you must give yourself the time and space to allow it to manifest itself through reflection. If, however, you don't give yourself time to reflect, to recognize what you're looking at, even at an intuitive level, then there is less chance for awareness to occur.
Therefore to foster awareness, I've found it beneficial to have large periods of reflection. For example, if you have a journal, it's important to not only give yourself time to write within it but also time to reflect upon it. Look back within it and see if you can see a pattern, connectivity, relationship, or interaction between the different individual events within your life, no matter how superficial they might seem at first. Above all else though, give yourself the time and space away from both input and output to digest what you are absorbing.
In effect, every so often ensure that you unplug from the external signals and noise around you, so that you can fully concentrate on the signals emanating from within you.