Self-regulated motor learning is a frequent and important achievement activity in sport and exercise contexts. Therein, individual learners' achievement goals can be considered relevant for motor learning processes and outcomes. To better understand their role, we first examined the temporal stability of achievement goals during self-regulated motor learning. Next, we tested the relevance of the goals and their temporal variability for the learning process (learning time, effort, and

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... l problems) and learning outcomes (performance and continuance intentions). To this end, 93 individuals completed a total of 1,017 daily diary entries about their goals (learning-approach, performance-approach, performance-avoidance, work-avoidance goals) and learning processes across sixteen days while learning juggling basics. Afterwards, they completed a post-test assessing their learning outcomes. Multi-level analyses indicated that goals contained both temporally stable and temporally variable fractions that were both relevant for learning processes. For learning outcomes, not only mean levels, but also temporal trends mattered.