Musing about trials (when is a promise a promise?)

“For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future.” - Jeremiah 29:11 Hmmmm I like this verse which sounds like a nice promise but I'm a dispensationalist so I don't apply it to.myself....(continued)...In context it appears to be about God's plan for Israel's return to the Promised land after 70 years of captivity in Babylon. Gotta be careful not to misapply verses, even ones that sound really good.