It's better to be lonely because you're alone than to be lonely because you're with the wrong person.
"In life, unlike chess, the game continues after checkmate." - Asimov
"Be patient and tough; someday this pain will be useful to you." - Ovid
I used to think the worst thing in life was to end up all alone. It's not. The worst thing in life is to end up with people that make you feel alone.
A quote I've always loved, from the late, great Robin Williams.
Life shrinks or expands in proportion to one's courage. ~ Anais Nin