“只顾自己”可以用以下几种英语表达：
1、 think only of oneself：
示例：He always thinks only of himself and never cares about others.（他总是只顾自己，从不关心别人。）
2、 be self-centered：
示例：She is too self-centered to consider others' feelings.（她太以自我为中心了，从不考虑别人的感受。）
3、 look out only for oneself：
示例：In times of crisis, some people tend to look out only for themselves.（在危机时刻，有些人往往只顾自己。）
4、 be concerned only with one's own interests：
示例：He is not interested in teamwork; he is only concerned with his own interests.（他对团队合作不感兴趣，只顾自己的利益。）
5、 act in one's own self-interest（更正式的表达）：
示例：It's natural for people to act in their own self-interest, but we should also consider the impact on others.（人们为自己的利益行事是很自然的，但我们也应该考虑对他人的影响。）
在这些表达中，“think only of oneself”和“look out only for oneself”较为直接且口语化，适合在日常对话中使用；“be self-centered”则更侧重于描述一个人的性格特点，即以自我为中心；“be concerned only with one's own interests”和“act in one's own self-interest”则更正式，适合在书面语或较为正式的场合中使用。