I often find that my mentality surrounding a shoot is dependent on the reason for the shoot. If I am simply taking photos for pleasure or for myself (as opposed to being assigned work by somebody else), I will be less stringent with ensuring that all the aspects of the shoot are as well executed as they can be. This is obviously a bad habit that am aiming to shed, but when it comes to still life photography, there is no reason not to get it right. You have as much time as you need to do a good job!
Unlike a landscape shoot, the light isn’t rapidly changing and unlike a portrait, you’re subject isn’t going to get bored of keeping still for long periods of time. Take advantage of this, set up your subject, lighting, backdrop and camera, try a few shots, then move things around a bit and have another go. If you get to a point where you feel like things aren’t going quite right, you can just leave everything set up, make yourself a cup of tea and come back to it refreshed later on.
Another advantage is that there’s no excuse not to have clean and sharp images, take time to get the lighting and focus just right. If you can get your hands on one, a macro lens will be ideal for this sort of work, however, if not, try selecting macro mode on your camera to give you the best chance of capturing the close up detail in your subject.