Osiris is the Egyptian Deity associated with the Root Chakra. So you’re starting in exactly the right place.
His advice about feeling more grounded is as follows: Be calm, access your wisdom, step into your power. Acknowledge the leadership within you. There are people out there who need you to lead them. No-one else can lead them, it has to be you. Take total responsibility for your outcome, and for everything. With responsibility, comes power. The more responsibility for your outcome you take, the more power you have over it.