Two new books have recently been published on practical philosophy
Julian Baggini and Antonia Macaro The Shrink and the Sage.
I heartily recommend them both to you - they are both well-written and wise which you can't say about too many books. Both also, in their different ways, combine psychology and philosophy, and both draw heavily on Greek philosophy. I'll update this post with more details in due course - in the meantime - read them and enjoy them!