Refuse to sink . this would make a nice tattoo . although I don't love the way "sink" curves . it makes me think it says "Refuse to stink" LOL. Maybe REFUSE on top of the anchor and TO SINK underneath, more like a seal.
Do not let things weigh you down Ships don't sink because of the water around them; ships sink because of the water that gets in them. Don't let what's happening around you get inside you and weigh you down.