effort可数不可数：my long-term effort 还是 efforts?

1.在表示“努力,尽力”时,effort是不可数名词,
I decided to make one more effort.
我决定再作一次努力.
2.表示努力的成果,成就时；它是可数名词
His recent novel is a fine literary effort.
他新近的小说是一本文学佳作.I must admit this job interview means my long-term effort is likelyto be successful.是对的吗？