Better the devil you know than the devil you don’t.
This proverb reminds someone thinking of changing their job that they know the faults of their present boss, but a new one could be worse.

Between the devil and the deep blue sea.
This is not a comfortable position to be in.  Recently the expression between a rock and a hard place has become more popular.

On the horns of a dilemma means faced with a difficult choice.  Is there any connection with the traditional portrayal of the devil with horns?  Brewer suggests it is a bull, which will toss you whichever horn you take hold of.

I’m in two minds.
I can’t decide between two alternatives.

As broad as it’s long.
There is no difference between two possible courses of action.

Anything for a quiet life.
This involves agreeing to something to avoid an argument.

Don’t be too choosey.
Advice against rejecting the good on the off-chance that something better might turn up, perhaps. or just plain picky.

You can’t always pick and choose.
Pick and choose mean the same – tautology.  Using two words with the same meaning is a device speakers use for emphasis.

I don’t have any choice expresses the same sentiment.

It’s a woman’s privilege to change her mind.
This is a well-known saying.  I don’t think it is a good excuse for a woman to vacillate and dither.  More tautology – it’s my turn to use it.

Change tack.
This is a change of direction either in a sailing boat or an argument.

Find a happy medium.
Compromise.

It’s swings and roundabouts.
If you are playing in a playground, it really doesn’t matter what you are playing on.

Don’t rush into anything
is a warning against making a hasty decision.

Sleep on it.
Things are often clearer after a good night’s sleep.

I’ll have to mull it over.
Mull is a lovely word, isn’t it?  Mulled wine has spices in it and is warmed up.  It has numerous meanings including ponder, which is another good word giving the impression of taking time to consider.

With the benefit of hindsight
…we’d do a lot of things differently – or would we?

Give someone free rein.
If a horse-rider controls the reins, the horse cannot decide for itself where to go.  If the reins are dropped, it has to.  So someone given free rein makes all the decisions.

A little of what you fancy does you good.
This is usually applied to food and drink.

Moses set before the people of Israel the most important choice they (and we) could make in Deuteronomy chapter 30 verses 19-20 (NIV) he said Now choose life, so that you and your children may live and that you may love the Lord your God, listen to his voice, and hold fast to him.  For the Lord is your life…