Introductory it as Object
5.4 V it adj when/ifThe verb is followed by it, an adjective group, and a clause beginning with when or if.
Most of the verbs with this pattern are concerned with how someone evaluates or judges a situation or possible situation.
I find it ridiculous when people keep analysing their marriage, forever questioning whether it will turn out to be a success.
I think it best if you leave at once.
The passive pattern is it be V-ed adj when/if, where it is the Subject of the clause.
consider find think
It is considered even better if preventative health care for a child begins before the child is born.