I had no idea what I wanted to do with my life
The quoted sentence looks like having two objects.
I (S) had (V) no idea (O) what I wanted to do with my life (O?)
Anything missing or something else?
I think this is subject - verb - direct object - object complement.
“what i wanted to to do with my life” clarifies or redefines the “idea”
Ars longa, vita brevis
I agree with saparris. (There is an implied “of” after “idea”.)
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