to be happy because you do not know or will not accept how bad a situation really is.

James is living in a fool's paradise if he thinks things are always going to be this good.

• do away with
• do away with someone
• do away with something
• do a world of good
• do battle
• do battle with
• do battle with something
• do best
• do bidding
• do bit
• do by halves
• do credit to
• do credit to someone
• do damnedest
• do dirt
• do dirty work
• do double duty
• do double duty as
• do double duty as something
• do double duty for
• do double duty for something
• do duty as
• do duty as something
• do duty for
• do duty for something