根据以下材料 回答题

根据以下材料，回答题
In our comparison-soaked culture, it′shard to avoid slipping into "Why can′t I" mode. When one of mycolleagues (51) ________ I think is not better than me published a new book, Icouldn′t help (52) ________ (complain) how (53) ________ (achieve) it seemed tome and what bad luck I had. Negative feelings like this made life dark for us.How to get rid of the harmful effects of comparison needs exploring. Here′swhat I learned:
Don′t compare your insides to someone else′soutsides.
The first time I heard this excellentadvice, I (54) ________ (suffer) from terrible envy. My professor′s warningshocked me that "You have no idea what it (55) ________ (take) for them toget there". Don′t just owe it to pure luck. Instead, you should fad outwhat′s really going on behind the scenes.
She was absolutely right, yet it′s much (56)________ (easy) to envy what they′ve got than it is to ask the seriousquestion: What are they modeling for me What have they done to get (57)________they are today When we reflect (58) ________these questions, we shiftimmediately out of comparison mode and turn inwards.
Transform comparison into celebration.
Admiration and envy are responses pointingus toward what we value most. And once we become aware of what we value, we aremuch better positioned (59) ________ (create) a richly satisfying life. If younotice yourself admiring people who take creative risks, bring your full attentionto the part of you that wants to be braver.
Use the success of others as a mirror.
Next time you catch yourself admiring orenvying someone′s success, take a moment to consider: What qualities in theminspire me Where do I presently display these qualities Remember the light wesee in (60) ________ can help us see our own.

答案：解析：was suffering。
考查动词时态。根据语境可知此处用过去进行时最为恰当，句意为“我第一次听到这个绝佳的建议时，我刚好在经受一种可怕的嫉妒”。