We had been having a problem with a plant we had bought for the house. The mimosa pudica we had purchased was doing well but had started to die fairly quickly. After trying to keep it watered properly I finally noticed it was stretching one of its leaves to catch some sun from our back door.
Last week I put it by the windows on the back side of the house and let it have full afternoon sun. That has made a dramatic difference as the following pic shows. I have to keep rotating the plant so it grows evenly, but it’s thriving quite well now!