I definietely think one suffers from their own anxieties,etc,but this does not make it any less a suffering. Often we see people who do all sorts of evil and yet seem blessed with no illnesses,etc. Then we see those who we see and we can not understand why they suffer so. Suffering can fall on anyone. Evil happens to good people too. Regardless of the origin, God always allows us what we experience for our own good.
Then there are those who are called to be suffering servants of God. We of this category, still are human and do not necessarily want to suffer,but learn to accept out state in life for a higher purpose. Often saints who accepted their sufferings this way, learned that surrendering one's life and giving one's suffering to God is a joy,not in the earthly sense of joy,but spiritual sense.
Sharing in Christ's suffering on the cross can be very mystical.