You can choose to make the My Dashboard portal tab your home page in ARC.
First, add My Dashboard as a portal tab.
Click on the My Dashboard portal tab.
In the top right, click the down-arrow button next to the Home icon and choose Set View As Home:
Every time you log in to ARC, the My Dashboard portal tab will be your default landing page. When you click the Home icon, ARC will return to the My Dashboard portal tab.