(((Mr. Venomous)))
I'm sorry that your date didn't show up.

How did you two make plans? Online, a dating site, through friends, or ??
I can relate to your frustration and hopelessness towards your sense of self and the future. I have fought with those rough emotions as well. What has worked for me has been to find a cause outside of myself to focus upon.
I'm not "all better" now. I wish!

But, it does help me get through from day to day.