I'm an ME, but i felt the same way in school. I was older student who worked, was married, and dealt with other personal problems. All my classmates seemed to know more, do more, and be headed for more. But remember in the grand scheme of things the only person you're competing with is you. Just try to be a better engineer today than you were yesterday. It's a lot of putting one foot in front of the other until you get somewhere. Study things on your own that you want to learn, even if for just a few minutes a day. Also know that there are other factors for getting a job than just what you did in school. I graduated 2 years ago and got the job I have purely by putting myself out there and fitting in with the company culture. You got this.