I might start by only buying beer by bike. I would add getting to work by bike. If you live far away, put your bike on your car and bike the last x miles. Commit to one weekend ride as a % of total weekly calorie consumption. Add an extra penalty for beer. Reduce penalty if you start losing weight.
Report back to this forum. If you do, we will guess you have been convinced to get back to biking and reduced weight. If you do not update us, we will all also feel badly and likely need to post about providing advice and encouragement. Not only is your future in your hands but so is ours.