I think that's a great way to look at things - you will have money in your pocket and can choose how to spend it, you hopefully have financial independence - good for you!

Many jobs aren't 'meaningful' as such, but they are purposeful and you are being productive as well as supporting yourself. Personally I find it helpful to seek 'meaningful' activity in other areas of my life than my paid job (volunteering, being with friends and even posting on here - your hobbies could be good examples too).

Hope the adjustment to your new working life works out well, it's still very early days.