Will Celexa and Concerta?

My psychologist suggested (and I later got prescribed, but have not picked up) Celexa and Concerta. But, I'm mostly focusing on the Celexa. I hope that this makes sense... I haven't been able to see myself (or believe that I'll exist) one year in the future, I've felt like my future self didn't exist and that I wasn't going to live past 10th grade. I have also felt that I wasn't going to live to be in middle school, or even high school, but here I am in 9th grade alive and well. Mentally unstable, I'll admit, but I'm alive and well. I've never had a good outlook on my life. For example, asking me what I want to be when I grow up seems futile. I want to be a computer engineer, but I can't picture myself being alive or existing when that would happen. I've very rarely ever had suicidal thoughts, barely ever. This has nothing to do with suicidal thoughts. Will the Celexa help with that outlook on life (since it's an SSRI)?