While no one wants to believe that a family member may not give the best advice, it's important for families with high-net assets to be leery of outside family members who may want to meddle in their family funds.
This recent Wall Street Journal article points out that if a family member is offering you advice, the first thing to ask yourself is why. Additionally, if your family member's advice contradicts or conflicts with your financial investor or advisor's advice, it's important to take a step back and think critically before making a decision. Remember that your family office or financial advisor is paid to have your best interests at stake, while a family member may be focused on his or her own benefit when giving you advice.
If you're unsure whether you should adhere to your family member's suggestion, run the idea by your advisor to get his or her take before making a decision.