Love this line;
4:6 Better is an handful with quietness, than both the hands full with travail and vexation of spirit.
Chapter 4 as a whole has some great thoughts and messages.
Chapter 6 has several positive messages as well. I particularly liked;
6:7 All the labour of man is for his mouth, and yet the appetite is not filled.
6:8 For what hath the wise more than the fool? what hath the poor, that knoweth to walk before the living?