Relief in a dream typically follows the resolution of something that's been weighing on you, even if the resolution hasn't actually happened yet in waking life. The sensation of tension finally letting go can point to a situation you're closer to resolving than you've given yourself credit for, or a release you're quietly hoping for.
The Moon is in conflict with those who are ruled by Mars, and Mars is in conflict with those ruled by the Moon. - Picatrix (Andalusia, ~1000.AD)