The blind leading the blind.

We all need advice. And good advice is priceless. But the problem is that advice can be tricky. Similar to how when doing research you need to be careful with your sources, when seeking advice you need to be careful with your advisor.

The blind leading the blind is used to describe a situation where a person who knows nothing is getting advice and help from another person who knows almost nothing. Subject matter expertise is key when seeking advice. Make sure your advisor has a good level of experience in the domain.