Take care of your pride and joy - your mane - and it will be your crowning glory. Have you settled into a hirsute habit?
Try a completely different style or cut. Go from classic to asymmetric or long to short. Add golden or coppery highlights and some glossing serum for a burnished glow.
"Bedhead" is the rage, but don't take it too literally. Today's versions are full of soft, romantic texture, but you can wear them to the office without looking like you just woke up. Try a tousled ponytail or loosely woven braid. Aim for grrroovy not grrrungy!