Your Luck Cycles move in 10-year waves, and each cycle activates specific Gods. If a particular God causes stress (say, a 7 Killings cycle bringing pressure and competition), you'll feel that theme arise.
But there's a deeper pattern: elemental returns. The sexagenary cycle means certain elemental combinations repeat every 60 years, with echoes at 30 and 12-year intervals. You may hit a "Metal clash" period every time the Horse enters your year pillar, for example.
This is actually empowering. When you see the pattern, you stop asking "why does this keep happening to me?" and start asking "the weather is arriving — how do I prepare this time?"