Many interesting ideas for research and evaluation arise from thinking about questions that come up in clinical practice: ‘It seems to me that treatment technique X works better than Y for this...

Many interesting ideas for research and evaluation arise from thinking about questions that come up in clinical practice: ‘It seems to me that treatment technique X works better than Y for this problem’, or ‘Clients seem to be less likely to drop out of treatment if I do Z’, or whatever. Perhaps you could keep a note of thoughts like that, and see whether there is any way to gather some relevant evidence.