In interpersonal relationships, how to choose teammates: First, you must look at actions, not words. Language can be deceptive and requires no cost, easily misleading people, while actions can better demonstrate a person's attitude, which is more sincere than words. Second, interests are the deepest feelings; people reveal their true selves when it involves their own interests. Those who can uphold their bottom line while also considering your interests are worth deepening friendships with, as this reflects an emphasis on friendship. Third, in extreme conflicts, if you remain neutral, it essentially means you are not considering your friend's stance on principled issues. After weighing the pros and cons, choosing to stay out of it amounts to siding with the opposing side. Fourth, criticism is like good medicine, while excessive praise may be poison. Flattery can easily lead to someone's downfall, making them complacent, while those who dare to point out your flaws are genuinely looking out for your best interests and are worth cherishing. Fifth, you must learn to stop loss in a timely manner to avoid letting sunk costs drag you down. Sunk costs are past expenditures that cannot be recovered, but if the other party does not consider your interests, continuing the relationship will lead to greater losses. You should decisively give up. Finally, let me emphasize, whoever considers your interests, you should stand by their side; this principle is very important.