Usually collected as part of a regular survey/questionnaire with activists (rather than with the wider community) throughout the duration of the project. This can also be done during learning fora or gatherings. Possible questions is:
To what extent do you agree or disagree with the following statement: Most of the time I feel a sense of achievement from what I do
Calculate the percentage of those that agree or strongly agree with the statement from the total that have been surveyed or consulted.