been keeping myself busy
A response that one gives when asked about their wellbeing or life in general. A: "I haven't seen you in awhile. How have you been?" B: "Ah, been keeping myself busy."
(I've) been keeping myself busy.
and (I've been) keeping myself busy.a standard response to a greeting inquiry asking what one has been doing. Bill: What have you been doing? Bob: I've been keeping myself busy. What about you? Bill: About the same. John: Yo! What have you been up to? Bill: Been keeping myself busy.