Add to ORKGFirst and foremost I want to thank my Heavenly Father for his love, and for the strength that he granted me to complete this thesis, and for all the wonderful people that He enriched my life with, and who supported me in this venture. I wish to further extend my sincere gratitude to the following individuals and institutions which, in some way or the other, contributed to make this study possible: To my promoter, Dr. Marietjie du Toit, and co-promotor, Prof Marie Wissing, for their insightful guidance, support, and setting examples of what psychological well-being means in life. To the leaders and members of the multi-disciplinary and other projects on which data the current research is based (FORT, POWIRS, THUSA, VAAL), for their organisat...