There will never come a day when you will wake up at 05:30 in the morning and not regret getting out of bed. I'm afraid it will never get easier. It will never be more convenient. It will pretty much always suck and you will pretty much always wonder, just for a minute, if you shouldn't give the gym a miss this morning. Sleep, you will reason, is better than exercise, and it's what your body seems to cry out for.
If you listen to the siren song of sleep, you will wake up a little later and get ready for work. The extra sleep may or may not have been enough, the grit may or may not be in your eyes. Your body may or may not thank you for the extra rest.
Your mind won't thank you. Your mind will whisper things to you all day long, backbiting you and running you down. Telling you you're not dedicated enough. Telling you you're fat. Telling you you're a bad person. Guilt and lessened self-esteem is the pay-off from missing your work-out, and day after day, it adds up until it's crippling. It's a bitter miasma, a dense fog, and you can't see clearly through it, or even really know you're in it. But you are, and it's bad.
You are the only person who can decide that your mental and physical well-being is important enough to make a priority. Your partner may be fighting the same battle, they can't help you. In those first blurry moments of wakefulness, you need to decide if your health and happiness are worth fighting for, and get the hell out of bed whether you want to or not. Those extra 15 minutes of sleep? They're not worth spending the entire day feeling inadequate for.
I'll tell you what you need. You need to sweat.
Now get out there and do it.