Dragon Age 2 Attribute Redistribution?

i chose a Mage as my character for dragon age 2 and I was disappointed to figure out that arcane warrior would not be reappearing...I I've been putting points into str and const so that could take the "battle mage" approach...I, however, realize that this will not work out week for me, because I will never reach mastery in certain skills...is there any way to redistribute points or should I restart?