Nervous Habits i think???

Recently i overcame some blinking problem i had that i would just keep blinking for no reason. My parents said it was a nervous habit. Now i tend to clear my throat very often and when i don't i feel like i might choke. Also i crack my knuckles and neck and back often and don't know if that has to do with anything but its there. Also i don't know if this is bad but its hard too explain but i will do my best.... I often feel like everything has to be balanced in a way...like if someone erases a dry erase board and leaves pieces of it on and keeps writing it drives me crazy....and if umm i wipe my face on my left side...i feel the need toi do it on my right or i just feel weird and i always try to get comfortable. I know i kind of went off topic a couple times but if u have any answers for any of these it would be appreciated. Also i recently became 15 and have had problems like this for a year at least and i do not know for sure about the nervous habits even being NERVOUS HABITS and if they are i don't even know what im nervous about. ty in advance