give something a go

a little of something goes a long way

Only a small amount of something is usually required to produce a great effect.

all dressed up and nowhere to go

Elaborately attired or otherwise fully prepared for an anticipated situation or activity which, nevertheless, fails to occur.

all systems go

Everything is ready.

as you go

While one is doing (something); as one progresses.

boldly go where no man has gone before

To break new ground.

chalk something up to experience

To take a lesson from a bad outcome instead of grieving it.

come and go

To repeatedly appear and disappear; to be transient.

don't give up your day job

Somewhat sarcastic but usually good-natured advice used to criticise a person's degree of talent (especially in music or other performing arts), implying that they are unlikely to be successful.