Now, instead of later.

Don't put it down.
Put it away.

Hang up your coat; don't fling it across the chair.
Load the dirty dish into the dishwasher; don't set it in the sink.
Toss the junk mail into the recycle container; don't pile it on the desk.
Put the socks into the hamper; don't let them fall by the side of the bed.

Why pick something up a second time?  Deal with it now.
"I'll take care of this later" too often turns into never.
Don't give stuff a chance to become clutter.

Eliminate steps.  Make life as simple as possible.
It's your choice.