Because I'm happy

I'm feeling happy today. Naturally, I'm unable to be happy without taking time to analyse why. This is the ideal state we all aspire to, the holy grail of modern life and a prized commodity during these quiet lockdown days. 

This makes me happy

I read recently that believing we can achieve happiness is a misguided notion. Better to live a useful life, where happiness becomes a byproduct (if we're lucky). This was said by somebody famous, though I can't remember who (possibly a former American president or First Lady - I've overindulged on US politics recently).