from what I learn in my cognitive psych class... one that you
may to do apart from changing your mindset is to understand how
this subject relates to what you want to do in your field that
you're interested in (e.g. microbiology), your future, and
yourself.. the more you can refer it to yourself you daily life in
someway the less of a chore it will be and the less you will dread
to study.
And not to think of it as a chore, but a challenge for you overcome
to get your intended goal of getting your diploma or BA.