We all spend a lot of time waiting-- waiting for opportunities to come out or waiting to hear news from the selection committee. Some of this down time before an RFP results in productive discussion and solution refinement, especially if you're using the time to get smarter about what the client really wants. But, unfortunately, a lot of this time is wasted in anxiety-generating speculation.
Instead, we could more productively use the meantime to look for adjacent work. Presumably just before or immediately after submitting a bid, you're most aware of the target market. You are also up-to-date on the latest thinking, research, technology changes, etc.
Use this time to look for adjacent opportunities. While you're waiting, scan the field for related work. That is same client, different problem or different client, same problem.