This study aimed to explore the value of systematic learning from successes (LFS) during the practicum phase in teacher preparatory programs, beyond the more traditional approach based on learning from problems (LFP). Specifically, the authors were interested to examine how preservice physics teachers may capitalize on LFS or LFP or both to actually teach students self-regulated learning (SRL). The authors conclude that results indicated that preservice teachers who contemplated both problematic and successful experiences improved more in their actual teaching of SRL strategies and in their actual arrangement of SRL environments, compared to preservice teachers who contemplated only problematic experiences.