Dream about collecting keys is a signal for your anxieties about dating or finding acceptance. You need to be more independent. You are feeling melancholy. The dream expresses your desires to find perfect happiness. Perhaps, you are having concerns about your ability to hold some situation or relationship together.
Collecting keys dream points at a situation where you felt powerless. You are short-changing yourself of your accomplishments. All the emotions that you have been holding back are coming to the surface. It is a symbol for undying and never ending love. An old lover may come back into the picture.
If you dreamt about collecting keys:
And while this is absolutely fine, it could also be foolish, if you are seriously thinking that this is how things are going to turn out. It would help if you could be aware of what is unattainable, and what is potentially possible with a little effort. Keep at least one foot on the ground.