Modern Western astrologers associate the planet Neptune  with illusion, deception, religions, spirituality, the mass media, music, drugs, extreme sensitivity, psychic phenomena and altered mental states. The discovery of Neptune in 1846 coincided with the discovery of anesthetics and hypnotism around this period.

For some astrologers, Neptune is the ruling planet of Pisces. Prior to the discovery of Neptune, Jupiter was considered the ruler of Pisces, and some modern astrologers consider Jupiter a co-ruler of Pisces. Some astrologers do not believe that Neptune rules any particular sign, even though they may use the planet in chart interpretation.

Yeah, illusions, dreams, drugs (substances), etc.

may have trouble distinguishing the real from the imagined or illusory...

You do not enjoy confrontation and become very evasive when problems in your personal life arise, escaping into your imagination in order to avoid dealing with them directly.

I have Sun conjunct Neptune, Moon square Neptune and Mercury conjunct Neptune. And i hate it. Of what use is this?
Being 'in a dream', having too much imagination... I make a joke out of the fact that i don't need drugs to 'get high' but i hate drugs anyways as well as this position of the stars at my birth and this 'quality' of me. What am i supposed to do about this?
I mean if you try to bend yourself too much to something that's not of your nature it's a bad thing cause you're not being yourself anymore but if you let it be 'too much' part of you it ruins you. Seriously having too much Neptune in your chart is a bad thing and you're lucky if you don't have any. Out of all the aspects in my chart this is the worst.  
Does anyone else have this kind of problem?

Neptune's placement in the first house indirectly imposes an influence upon your personality. This placement suggests that you are susceptible to subliminal influences. You're highly impressionable and intuitive. There is apt to be a strong reliance on spiritual qualities. There can be self-delusion associated with this placement, and often there is a good bit of confusion regarding goals and proper direction in life. Thus, you may drift in life, and miss or delay action that should be taken. A lack of definite self-image can, if you let it, force you to depend on others for support and direction. Thanks to this placement, you are probably much more psychic than most people and perhaps much more psychic than you believe yourself to be.

Neptune residing in the second house imposes an influence upon material affairs in your life. Self-deception often influences spending and the result may be over extension of finances. You may experience losses due to poor judgment and carelessness with your money. The slightest compromise with the truth can cause you much difficulty in money matters. Beware of get rich quick schemes that seem too good to be true; they probably are.

Neptune in the third house imposes an influence on your mental processes and your communication with others. This placement shows a very intuitive mind, and sometimes, an ability to communicate on a higher plane. It often suggests involvement in some way with mass media or with advertising. In your youth, your mind may be subject to drifting and wandering, and a practical channeling of ideas and information must be developed and maintained. Insecurities in the early part of life are likely.