You're being pulled in many different directions. Resist the temptation to satisfy all parties. If your employer has been making unfair demands on you, say so. Continuing to put in long hours for little reward is a losing game. It's more important to take time for yourself. It doesn't matter whether this means going away or leaving work early for a child's rehearsal. The important thing is to assert your need for a private life. If you don't stand up for yourself, nobody else will.
Give my team of gifted psychics a call on *0906 539 1662 (150p per minute + Phone Providers access charge, 18+) or 0207 111 6154 (Credit/Debit Card payments) to hear why people skills and careful time management are what's need most now. You could expend excess energy by trying to move forward with a plan without doing your groundwork first.