IDIOM: Can’t see the wood for the trees

If you can’t see the wood for the trees it means you can’t see the whole situation clearly because you are looking too closely at small details, or because you are too closely involved.

Examples of use:I’ve spent all morning looking for a birthday present for my dad! There is too much choice!!! I got so confused with it all, I can’t see the wood for the trees anymore.
 
In business:Mark is too concerned with the project details that he can’t see the wood for the trees when it comes to the overall long term goals of the company.