I‘m looking for an idiom which describes that I put too much engagement/pressure in a thing ( a relationship for example) which eventually blew it.
One fairly common expression is trying too hard.
For example usages, it's not too hard to find advice columns entitled something like:
8 Signs You're Trying Too Hard To Make A Relationship Work
10 Signs You’re Trying Too Hard and Turning Him Off
13 Signs You Are Trying Too Hard In A Relationship
To overdo it:
To do so much of an activity that it becomes harmful, detrimental, unenjoyable, or undesirable. (the Free Dictionary)
- I know you're keen to get back into the gym, but don't overdo it or you'll end up hurting yourself.
- Don't overdo it with loving affection.
- Don't overdo it, or the search engines might mark down your results.
too much of a good thing TFD idiom
An excessive, unhelpful, or harmful amount of something that is otherwise enjoyable or beneficial.
I usually take short vacations as I can't stand too much of a good thing.
Again a relationship failed. I guess i do not do well with too much of a good thing!