My diet is definitely better taken care of than my exercise routine

A bit less eating would be nice, but more regular time on the treadmill in particular would be a great contributor to continued health.

I sit all day at my job and mostly all evening at home. I need to exercise but have a hard time finding motivation

Both, but this one more.

Most people do need to eat less, meaning smaller portions. But, I am basically lazy and need to keep strong and toned.

it is a fact