Laziness: (in Buddhism defined as “being attached to temporary pleasure, not wanting to do virtue or only little”.) The reason for this kind of laziness could be based on the fear of responsibility or making mistakes, based on the unrealistic:”I should be perfect and not make mistakes, so I better do nothing at all”.
Once more in the words of His Holiness the Dalai Lama from How to See Yourself As You Really Are:
Laziness comes in many forms, all of which result in procrastination, putting off practice to another time. Sometimes laziness is a matter of being distracted from meditation by morally neutral activities, like sewing or considering how to drive from one place to another; this type of laziness can be especially pernicious because these thoughts and activities are not usually recognized as problems.
At other times, laziness manifests as distraction to thinking about nonvirtuous activities, such as an object of lust or how to pay an enemy back. Another type of laziness is the sense that you are inadequate to the task of meditation, feeling inferior and discouraged: “How could someone like me ever achieve this!” In this case you are failing to recognize the great potential of the human mind and the power of gradual training.
All of these forms of laziness involve being unenthusiastic about meditation. How can they be overcome? Contemplation of the advantages of attaining mental and physical flexibility will generate enthusiasm for meditation and counteract laziness. Once you have developed the meditative joy and bliss of mental and physical flexibility, you will be able to stay in meditation for as long as you want. At that time your mind will be completely trained so you can direct it to any virtuous activity; all dysfunctions of body and mind will have been cleared away.