I’ve seen this one in a few places purporting to be from the Buddha. It’s definitely not something the Buddha said.
Mostly it’s attributed to Osho/Rajneesh, and I suspect that’s correct, although I haven’t yet found a definitive source. It’s usually included as part of this longer quotation:
Suffering is not holding you. You are holding suffering. When you become good at the art of letting sufferings go, then you’ll come to realize how unnecessary it was for you to drag those burdens around with you. You’ll see that no one else other than you was responsible. The truth is that existence wants your life to become a festival, because when you are unhappy, you also throw unhappiness all around. .
The Buddha of course had a lot to say about suffering, since his Dhamma (teaching) was aimed at liberating us from suffering. For example, he said:
Now this, monks, is the Noble Truth of dukkha (suffering): Birth is dukkha, aging is dukkha, death is dukkha; sorrow, lamentation, pain, grief, & despair are dukkha; association with the unbeloved is dukkha; separation from the loved is dukkha; not getting what is wanted is dukkha. In short, the five clinging-aggregates are dukkha.