This is something I've been doing since the pandemic hit: Set yourself a project each year. Learn something new, get good at it and apply it over a 1 year project (depending on what it is you might divide the project into several phases).

It could literally be anything that interests you. Electronics, car audio, carpentry, automotive restoration/mechanics/customization, welding, upholstering, landscape design, PC building, painting, learning an instrument, videography, interior design, home renovation... Anything at all.

There is a bunch of material online these days about literally anything anyone would ever want to learn... and the idea is that at the end of the project you've actually learned heaps, made something useful and you'll never be bored again :)