Recovering deleted data from dashboard???

I stupidly just deleted a password I pasted onto a "post-it" note in dashboard and there seems to be no option to get it back. I tried to go back in time machine but recovering it seems to be difficult.
Any other ideas? It is a password for an account with no other way in (security questions, etc.). Very stupid of me!

 

Thanks Rob - I missed the "stickies" key word I guess when I searched.
Yes I agree! Bad move by me, but that post sorted me out. Appreciate it!