Do what you think is right, regardless of other people's opinions.
Sticking to one's own opinion and not being flexible is sticking to one's own opinion.
Straight road: straight; Good: engaged in. Do what you want. Metaphor is arbitrary.
Go your own way, that is, don't accept other people's suggestions and stubbornly follow your own subjective ideas.
Stubbornness: change. Insist on mistakes and refuse to repent.
Deep refusal describes a firm refusal to accept other people's opinions.
Teacher's heart is for self-use. Teacher's heart: Taking heart as a teacher means only believing in yourself; Personal use: act according to one's own subjective intention. Describe being self-righteous and refusing to accept the correct opinions of others.