Spread too thin

This semester I feel like I piled a little too much on my proverbial plate. I thought that if I took the same load of classes and extracurricular activities in past semesters where I managed them all right, I wouldn't have a problem. It is the same amount of work. Well, not adjusting for the difficulty of these classes and that my priorities ultimately lie with my new family now, this same load is starting to drag me down. Genetics, 2 Physics courses, Chemistry, a huge Men's Chorus commitment, two courses with a main component of writing, religion and undergraduate research, keeps me on campus for 40+ hours a week. These classes have a combined homework and midterm study load of 25 hours a week. Each semester I have about fifteen nighttime commitments for concert rehearsal or performance. I'm not complaining because I did this to myself but for the first time in my life I am struggling academically. It may not take me as long to do an assignment or study for a test as most other students, but I'm not a freshman anymore. Focusing on my upper level classes, and doing well in them, my American Heritage grade is suffering. I feel inadequate that a freshman level course is kicking my butt, yet I should be content that I am excelling in 14 units of advanced credits. I guess I should just get used to not having enough time for everything that I need to do and set my highest priorities and trust that with the Lord's help I can succeed.