I think most people would be surprised by how often 'it's who I am' really boils down to 'I am currently comfortable with this'. Changing the deep feedback loops that we call a personality is usually very difficult because so much of the human firmware runs on autopilot and resists conscious control but we are not static patterns - we can and do change constantly. Some changes are hard and some changes are easy but it's remarkable how much a small change can sometimes make a big impact in our lives.
Then you better let people know that you love lawnmowing as a way of processing stuff. They will send you food or good wishes if you are not allergic to those.