Yes, it's frustrating when your body's clock is out of phase with your employer's clock.
First I'd look at what's happening in the evening that may be interrupting the normal progression toward sleepiness. A gradual decrease in our exposure to light is a big factor in triggering the release of melatonin in the brain - normally the setting of the sun does this for us. In the modern world, however, we've got all these cool and compelling light-emitting machines (TV's, computers, iPhones, etc) that suppress the natural release of melatonin and the urge to sleep. If you can limit your screen-exposure and gradually dim the lights in your living space after 8pm, you'll increase the production of melatonin and increase the likelihood of feeling sleepy by 10.
In addition to light exposure, physiologic arousal can suppress the urge to sleep. Exercise and/or stressful activities late in the day can lead to an increase in adrenal activity that can make you feel less tired. If you can keep your evening activities more on the mellow side, you're less likely to fall into this trap.
If you try all these things and you still have difficulty shifting your circadian rhythm, supplemental melatonin on a short-term basis can be useful in resetting your clock. Usual doses fall in the 1-3mg range taken about 30 minutes prior to the time you want to try to fall asleep.
Don't get discouraged during the process, it takes time and persistence. Over the course of a few weeks, the mornings will gradually get much easier.