Why am I in my way?

The threshold guardian to my life is myself. This is because the part of me that wants to lazy and do nothing all day is a constant obstacle in my life. I have always been a very bright person and good grades come easy most of the time. The only thing that makes getting good grades in school is the lazy side of me. It is like my fifth grade year when I did my work had straight A's but when I felt lazy I would fail without the possibility to pass that six weeks.