Most of my natal planets are involved in oppositions. Where oppositions are bundled up, it's called a "see-saw" chart formation.
Basically the procedure in choice-centered astrology is to:
1. get clarity on the opposing or squared planets' nature, houses, signs, and aspects to other planets.
2. Have they got something in common? For example, maybe it's a moon in Capricorn and Saturn in Cancer, which puts the planets in a situation of mutual reception.
3. How might they work out a compromise?
Just for example, I have Mars in Pisces opposing Saturn in Virgo. Mars tended to stick his neck out, and say things that were rash and even hurtful. This type of episode was followed with shame and self-blame when Saturn kicked in (the see-saw effect.)
When I began to work on this, I thought, more positively, that Saturn symbolized self-discipline and Mars ruled athletes. With Mars ruling athletes and in watery Pisces, I thought of thought of swimming laps at my local rec center, and disciplining (Saturn) myself to perfect (Virgo) my strokes. Speed (Mars) for me wasn't an option, but I go for the stretching benefits and endurance (Saturn.) The bigger issue of rash angry statements followed by self-blame has meanwhile gotten a lot better.
My husband and I also enjoy canoeing in the summer, and this is another activity that combines Mars (rules sports) in Pisces (water) with endurance and oftentimes hard work (Saturn.)
Everyone's life and chart is different, but hopefully you get the idea of how one could actually work on a tough square or opposition.
Put differently, Mars says, "I want to jump out of airplanes."
Saturn says, "OK, but take sky-diving lessons, double-check your parachute, and listen to your instructor."
You can imagine the boost that this strategy would get from a third planet in a sextile or trine position. I don't have any natally, but periodically they come around through transit.