This chapter examines development through different life transitions, such as educational transitions and transition to parenthood during adolescence to adulthood in the context of the life-span model of personal goals. According to the life-span model of motivation, four key mechanisms--channeling, choice, co-regulation, and compensation--play a key role in how young people navigate their life. The aim is to describe how the conceptualized key factors are helpful in understanding the changes from adolescence to emerging adulthood and later in the life course and related well-being. (Contains 1 figure.)