Victor Frankl's idea is not a new one, but his life experiences and his explanation of his logotherapy are moving and helpful. I don't know if he provides a completely satisfactory counter-argument to someone like Camus, whom I also admire greatly, and I suppose one's personal philosophy of life has a piece added to it every time another great philosopher is encountered.
It would be presumptuous of me to attempt to summarize Dr. Frankl's life study and many publications in any simple way, but isn't that what the internet is for (besides pornography)? So here it is. Add the following three quotations, song lyric and Jewish myth together for an approximation of Frankl's philosophy.

1."A high station in life is earned by the gallantry with which appalling experiences are survived with grace." Tennessee Williams

2. "It is never by chance that one takes the dishonorable way." Albert Camus.

3. "The fact that life has no meaning is a reason to live - moreover, the only one." Emil Cioran

4. The lyrics to The Impossible Dream from the Man of La Mancha

5. The Kabbalistic idea of tikkun olam.