I personally don’t see anything wrong with bragging about your achievements, whether they be academic (graduation) or materialistic (luxury car after saving for 3 years).
In fact, I love reading that and it inspires me. Hopefully it would inspire others too or allow them to live vicariously through you.
If you are bothered by bragging, please read no further.
SO, everyone is invited to my bragfest where they can brag about that new promotion, that designer handbag or that dream holiday. No judgements here, just celebrations for your achievement !