The fighter. The lover. The friend. Just don't think that 9 is the fighter, 10 is the lover, and 11 is the friend. In every regeneration each one is all these things. Remember, they are all the same man.
To Christopher Eccleston: thank you for introducing me to The Doctor. You were FANTASTIC. To the Ninth Doctor: I miss you already. Eccleston: Thank you for being the Doctor and being a part in the wonderful series!