Another vote for decluttering. Recently did a whole month of daily decluttering challenge and found it not only therapeutic but also a good reminder of all the accumulated wasted spending to avoid in the future.
Also, since it seems like automated investing worked for you, you could also double down on that approach as a way to reduce the money available to you to spend. For example, pay additional principal towards your mortgage, save to college fund for kids, anticipated home repairs, or whatever else makes sense for you.