In Dzogchen, natural awareness refers to the innate state of consciousness that is always present and aware, free from all concepts and dualistic thinking. It is the ultimate goal of the practice, to fully realize and abide in this natural state of being. However, there are several obstacles that can hinder one's ability to realize natural awareness in Dzogchen.

The first obstacle is the influence of the ego. The ego is the sense of self that is constantly seeking validation and perpetuating a false sense of identity. In Dzogchen, the ego is seen as a hindrance to realizing natural awareness because it creates a sense of separation and duality, which goes against the non-dual nature of natural awareness. The ego also creates attachment and aversion, which can lead to distractions and prevent one from fully immersing in the present moment.

Another obstacle is the influence of thoughts and emotions. In Dzogchen, thoughts and emotions are seen as temporary and illusory, arising from the mind's constant activity. However, when one becomes identified with these thoughts and emotions, they can cloud the mind and prevent one from recognizing the natural state of awareness. Negative emotions such as anger, fear, and attachment can also create a sense of agitation and restlessness, making it difficult to settle the mind and abide in natural awareness.

The third obstacle is the lack of proper guidance and understanding. Dzogchen is a complex and advanced practice that requires proper guidance from a qualified teacher. Without proper understanding and guidance, one may misinterpret the teachings and get caught up in intellectual understanding rather than direct experience. This can hinder one's progress in realizing natural awareness.

Lastly, the influence of external distractions can also hinder one's ability to realize natural awareness in Dzogchen. In today's fast-paced world, there are endless distractions that can pull us away from the present moment and our true nature. Constant stimulation from technology, busy schedules, and societal pressure can make it challenging to find the time and space to cultivate natural awareness.

In conclusion, the main obstacles to realizing natural awareness in Dzogchen are the influence of the ego, thoughts and emotions, lack of proper guidance, and external distractions. It is essential to recognize and overcome these obstacles in order to fully realize and abide in the natural state of awareness. With dedication, practice, and the guidance of a qualified teacher, one can overcome these obstacles and experience the profound state of natural awareness in Dzogchen.