Don’t work on the relationship: work on oneself; the relationship takes care of itself.
Each person works their own steps, traditions, and concepts.
Eliminate all of one’s own character defects.
Achieve 100% equanimity before assessing anything.
Accept the other person entirely and seek to change nothing.
Negotiate practical matters calmly and pragmatically.
Seek to serve the other person: yield maximally; do helpful things.
Be diligent in the fulfilment of own obligations: prompt and maximally competent.
Never complain about anything. Overlook all faults. Praise and be grateful for virtues.
Bed in: treat the relationship as permanent and do not consider leaving or pausing.
Have fun and do not take oneself seriously.