What are the obstacles on the path to discovery?

They add up to nine ;
1 : Illness : In the body

2 : Inability to comprehend :Illness in the mind that is either mentally challenged or is incapable of comprehension.For example, you will be perfectly alright but when you get to start meditating, sickness befalls you! If you are watching television, nothing happens, but if you sit down to meditate, the body grows restless. This is an obstacle in your path.

3 : Doubt :First need to understand doubt. Your doubts are always about something that is good.
There are three kinds of doubts.
a : The first is doubt about oneself.
b : The second is doubt about the technique that you practice on the path and
c : the third is doubt about the master or teacher.

4 : Carelessness :You know that certain things are not good for you and knowing this too well, you do it. Carelessness, not being alert and attentive is the fourth obstacle.

5 : Laziness :Alasya is laziness or heaviness of the body.
You may do a lot of things, but when it comes to doing little asanas, postures or exercise, you simply don´t. This laziness which can creep up in any aspect of life while doing anything is the fifth obstacle.

6 : Non-attachment towards the senses :Being engaged in any one of the sense objects and not coming out of it.When you are hungry, you eat food.But thinking about it 24 hours and being feverish about the whole thing all the time is obsession.
Incompletion of any sense creates attachment of that object. It is a big obstruction in the path of yoga, for, it does not allow you to get centred.

7 : Hallucination :Many seekers practice something and get some vision and they get caught up in that vision because the visions are neither completely false nor completely true. They are a mix of both. So people try to hold on to it.
Yoga Maya means a vision would come and give you some message or it will be an intuitive message. You are sitting and meditating and a message will come, “Go and open the door; somebody is waiting for you” and you go and open the door and you find someone there and that gets you excited. But just because you had intuitive thoughts a few times, you get caught up in assuming all the thoughts that come to your mind always come true. But, many times residues or traces of your desires and hatred and fear will also come up. This is delusion or bhranti darshana.

8 : Non-attainment of any state :This is when one feels completely stuck, when you get that feeling that you are not going anywhere. The eighth obstacle is non-attainment of any state or samadhi, any peace or tranquillity.

9 : Instability :Sometimes people say that while doing meditating they feel peaceful and experience bliss, but, after a few minutes the whole thing vanishes. This is another usual complaint that people come up with. This is the ninth obstacle.