I definitly believe that ownership is the key to happyness - that life no longer just happens to you but you gain into control.
While taking ownership is definitly a skill to master - infact it is also the first of the 'The 7 habits of highly effective people' by Stephen Covey
For me personally - the biggest challenge is not to take ownership for things that are not mine. While my sense of responsibility is helping at times - I noticed that that I quickly take over responsibilities from others and thereby deprive them of a learning opportunity. I did this at work but also with my kids (being a bit overprotective). Keeping a simple journal on this, reflecting and also to come back at this as it occured helped a great deal to change this for the better!
(p.s. I followed your advice and stopped the large delegation - taking ownership :) )
Trying to take on responsibilities and ownership of everything can end up limiting progression so it's important to know when to accept it and when not to. It can be difficult to know when and what though.
I like that you took some ownership and hope it goes well.