This post reminds me of ADHD. Here is a quote from a 2009 Washington Post article :

According to the theory, the trouble is a lack of motivation as well as a deficit of attention: People with the disorder can't generate the same degree of enthusiasm as other people for activities they don't automatically find appealing.

ADHD has long been assumed to have something to do with low dopamine. So perhaps something to raise dopamine levels would be helpful. Some people claim that taking L-tyrosine, a dopamine precursor, can raise dopamine levels and help people pay attention to things that would otherwise not hold their attention.