The most common reasons for loss of motivation are:

• a change
• accumulated changes
• a negative experience
• several negative experiences

 Specific contributing factors might be:

• a low mark or a series of low marks
• getting behind on a program of study
• responsibilities, other than study, taking priority
• feeling isolated
• study becoming irrelevant to short term or long term goals
• a mismatch between the knowledge, beliefs or interests which a student has and the ideas with which they are coming in contact
• the difficulty of subject material