carelessness is like a disease you can catch. and will bother you all the time. You can be super smart like me. But you can still be careless. you can play sport. and be the best. but you can still be careless. to fix carelessness you can. You can overcome the carelessness by meditation for at least twice a day for 15 Min's.
And learn yoga which will give concentration power, good memory and it will remove your carelessness and build a willpower in your mind.
Try you will sure get sucess in your life. Also read the bible and try to follow the way of god.

I am a kid that has been at both private and public school. public school their is probobly only one real smart kid their. Then their is a bunch of idiots. But at private school it is the oppisite. But the kids at public school are nicer to new kids then private school was no doubt. But at public school they will not keep anything a secret about anything. But at private school they keep a whole load of bad secrets.