The five hinderances, as taught in Establishing Mindfulness (Satipatthana Sutta)* are: 1) sensory desire, 2) hostility or ill-will, 3) dullness or lethargy, 4) agitation or worry, 5) doubt.
It is the practice of mindfulness that allows us to recognize these qualities in the mind. The practitioner recognizes when they are present and when they are not present. Through practice, if and when these qualities are abandoned, the practitioner knows they will not arise in the mind again.
The practice of mindfulness consists of sitting in contemplation and establishing mindfulness. There are four phases: mindfulness of the body, feelings, mind and qualities. Within the explanation of the last section, qualities, is the explanation of the five hinderances.
It is taught that if one is able to live in recognition that there are these qualities, one can be aware as they come and go without holding onto them.
Source:
* Satipatthana Sutta, M I 60 – Sayings of the Buddha, Rupert Gethin, pp. 147-148.



