I messed up my junior year, can I turn it around?

<p>This is a repost because i didn't get much the first time around</p>

<p>I go to a small highschool that is apparently noted for being top 6% in the nation in academics or standardized test scores or something of that sort. I took a pretty tough course load this year and i feel like i REALLY messed up. I could definitely handle it, but i failed to prioritize at all. Right now i want to go to Colby College, and with these grades, im not sure if i can even make it at this point. Not to be conceited, but i am definitely smart, i have just lacked the self discipline to do the work and it has really bit me in the ass. I have recently started to kick myself into shape and i am hoping and planning on a phenomenal 4th mp. I'll give you my grades as a reference, just so you can hopefully give me some insight into whether i can turn it around and any other extra advice to help me do so.
MP1, 2, 3 respectively
Trig- 89, 91, 79
Environmental Studies- 91, 93, 90
Spanish IV- 91, 89, 84
AP History- 85, 78, 83
Honors Chemistry- 90, 90, 81 (that should increase slightly, probably to an 85)
Gifted Humanities 11- 81, 75, 81
Health- 94, 98, 98
PE- 94, 97, 96
German III- 96, 97, 98
Not to make excuses for myself, but apparently a LOT of my class struggled this marking period. I appreciate your help, and thank you.</p>