You could make a small sketch of a random object/thing every day, even in 1 minute, what matter is to do it each day. It will improve your observation skill and help you to "understand" shapes, which will help you in drawing in general, not only for objects.
This is an advice that really helped me, even if i often forgot to draw something ^^. I hope it'll help you, and don't forget to persevere, it took me a lot of time to do decent drawings and i still get a lot to learn =).