After you check out the WOD, begin to set little goals for your upcoming performance. You may want to get more reps, use more weight, move quicker, use a full(er) range of motion, jump higher, sprint further, etc.
You don’t need to break world records and hit PRs every WOD, but you should always look to improve by setting a couple of small goals. These will help you focus and push even harder.
Whether you reach them or not, you get better by trying.