put all (one's) eggs in one basket

put all (one's) eggs in one basket

To invest, devote, or commit all of one's energy or resources into a single venture, opportunity, or goal, generally at the risk of losing everything in the event that that thing fails or does not come to fruition. She has all her eggs in one basket with this merger deal. If it doesn't work out, I doubt her company can survive. I applied to several colleges so I wasn't putting all my eggs in one basket.
See also: all, basket, egg, one, put