You may not be engaging in reflection just because you have experienced something. According to major models of reflection it is what you do with the experience in order to learn from it that is important.
Remember that when reflecting you may not be writing in the third person, like other academic assignments. You may be writing in the first person, stating that you did the activity then may write in the third person in an analytical section. It is important to check with your lecturer what they would prefer and look at your assignment brief and learning outcomes.
Reflection could encourage you to process your emotions around an experience and learn so that you behave differently in the future.
By reflecting regularly you may improve and be more able to develop your learning over time.