I asked myself and I couldn't answer for sure. The last time I felt truly happy was around 2014 when I was in relationships. Maybe even before that. Since then it's just time/momentary happiness but nothing fulfilling.
It's kinda sad if I think about that. I had a relapse today emotionally and I asked myself this question but I couldn't answer properly.
All those years I'm compensating happiness with material purchases and even though I knew that, I was just carrying on because I wanted some happiness in my life even though it was just for a split second.
I'm happy or I'm thinking I'm happy but not truly, I'm single since 2014 and even though I achieved a lot in my life, in my job, a good career etc. there was always something missing.
Maybe this accounted for moving abroad and starting a new life after breakup. Who knows?
Life is unpredictable and I'm at the moment unhappy.
Sorry for the rant, I wanted to get out of my chest.
Keep on smiling!