Try something minimal, like walking on a treadmill for less than one minute. I started with just 30 seconds because walking irritated my hips and shoulders. As my tolerance grew, I was able to increase, first by 30-second intervals, then by several minutes. Therefore, you need to have a full array of methods to make yourself feel better and keep going. I always end my workout by relaxing in a sauna.
Massage helps some people tremendously.
Strong muscle relaxants and analgesics, a TENS units, and heat packs can also make a big difference. A leisurely hot bath with candles, earplugs, and baby oil may bring any sort of day to a pleasant close. Always keep in mind that although our muscles may hurt like hell, using them will not injure them. Post-exercise soreness will decrease over time, especially if you respond to your body's signals and pace yourself. No doubt it will be hardest in the beginning, so stockpile your most effective modalities to keep your levels of pain and fatigue tolerable.