I also voted 'mixed feelings', but please note I didn't attend an American college. Having English composition classes was helpful in the sense that it ironed out some of my bad habits.
On the other hand, writing was my strongest subject and I breezed through those classes. We had to draft 'essay plans' to go with our work; but I would write the essay,
then jot down the 'plan'.

I found it was better to read through the work, making amendments each time. The trick is to concentrate on how the words sound in your head: to make the essay read well.
It's much easier to plan an essay once you've written it... I went through an entire college term getting A grades - I wasn't popular with the other students!
The problem was that in almost every other way I was a terrible student. I had no revision/study skills, no exam technique and I dropped out of college. It was only (much) later that I found out I wasn't actually stupid - just different. Once you learn to work with your differences you can turn your weaknesses into strengths. Years later I enrolled in a university course and did well there - also with mixed feelings!
I'm interested in what bidi said (above) about taking measurements. I once had a job where that's practically all I did... It's strange how the need to make a living distracts you from the things you can do well. I now spend much of my time writing - though it's not creative, it's better than walking around all day with a micrometer.
A final point in this (already too long) post of mine is about developing a reading habit. Books are for entertainment
and information. If you want to write well, then it's important to read a lot.