I also find Viktor Frankl's work, Man's Search for Meaning, profound and helpful. For example,

“it turned out there was a solution to their problem, an answer to their question, a meaning to their life.”

"Even if things only take such a good turn in one of a thousand cases, who can guarantee that in your case it will not happen one day, sooner or later? But in the first place, you have to live to see the day on which it may happen, so you have to survive in order to see that day dawn, and from now on the responsibility for survival does not leave you."