This book is for all aspiring, current and past Expatriates (Expats) wishing to work, advance or reflect on their career in international development assistance at organisations such as the United Nations (UN), European Union (EU) institutions, other intergovernmental organisations, NGOs, national institutions or also the private sector. The book provides hands-on, practical advice, based on experience, reflection, review - less scientific, but real and usable advice, for immediate possible application. It speaks to all the diligent, dedicated people committed to international development, seeking to collaborate in collegial spirit to improve peoples' lives all around the world in the realization of (sustainable) development goals.