Perfectionism in Meditation

When I first started *metta bhavana*, everything went very well and I generated a strong feeling. Ironically, I am now anxious in doing this meditation (i.e. I skip some) because I feel I might not recreate the same quality as before. I feel this is definitely the wrong way of seeing, but I can almost not help it. **Are there any suggestions towards this type of anxiety/perfectionism?**