Spikes of A, V, W chopped off
Strongly unlikely to be a font - it's an ambigram, which would have to be carefully designed and purpose built for this exact message. You may be able to find fonts that match its style to a degree in Handwritten/Script sections of DaFont though.
It is indeed an originally-created font. Some inspiration for it came from the font Twentieth Century, however Blissful Thinking was made from scratch and is very different when you actually compare them.
I've been looking for a while for a Discord server based around discussing fonts, typography, design etc, but haven't been able to find one - so I've made one.
https://discord.gg/8s2UZKH
It's lax rules-wise and currently very empty, but hopefully more people like me exist that sometimes fancy talking fonts. It's public and anyone can enter it, whether a creator, a helper or just a font fan!
Alle Zeitangaben sind CET. Es ist jetzt 12:47