A variety of factors can affect attention. Obviously, interest or disinterest in the focus of attention is of prime importance along with genetically inherited and expressed temperament. Distractions, stress, diet, and sleep may have an important impact as well. These are not the only factors, however. Conditioning of the mind is also of crucial importance.
Individualized training in sustained attention makes it easier to maintain focus on simple, mundane activities as well as more complex, challenging tasks. Skilled application of selective attention also allows the self-regulation of run-away thinking, anxiety and moods.