The one I like to use a lot is

Look before you leap/Haste is waste vs Those who hesitate are lost.

In the old days Bill Gates used to quote the latter and Buffett the two formers.

Don't know their stance now.

Conflicting Proverbs.....

Actions speak louder than words./The pen is mightier than the sword.

Look before you leap./ He who hesitates is lost.

Many hands make light work. (or) Two heads are better than one. / Too many cooks spoil
The broth.

A silent man is a wise one. / A man without words is a man without thoughts.

Beware of Greeks bearing gifts. / Don't look a gift horse in the mouth.

Clothes make the man. / Don't judge a book by its cover. (or) All that glitters is not gold.

Nothing ventured, nothing gained. / Better safe than sorry.

The bigger, the better. / The best things come in small packages.

Absence makes the heart grow fonder. / Out of sight, out of mind.

What will be, will be. / Life is what you make it.

Cross your bridges when you come to them. / Forewarned is forearmed.

What's good for the goose is good for the gander. / One man's meat is another man's poison.

With age comes wisdom. / Out of the mouths of babes and sucklings come all wise sayings.

The more, the merrier./ Two's company; three's a crowd.

The best things in life are free. / You get what you pay for.

It never rains, than it pours. / Lightning never strikes twice in the same place.

Better to ask the way than to go astray. / Ask no questions and hear no lies.

Never do evil, that good may come of it. / The end justifies the means.

Variety is the spice of life. / Don't change horses in the middle of a stream.

There is nothing permanent except change. / There is nothing new under the sun.

Never too old to learn. / You can't teach an old dog new tricks.

Everything comes to him who waits. / He who hesitates is lost.

Opposites attract. / Birds of a feather flock together

You cannot take things out of context. If you do that, which you have, then what you have pointed out is simply "obvious".

Here's another:
Failures are stepping stones to success
Nothing succeeds like success

Do you think they are contradictory? I think not. They are complementary in fact...both right...but in a particular context.