The fear of demanding too much from others can become a hindrance to sharing. This includes both lending gear and lending a hand. Most people would not refuse to help a friend in need, but they seldom get asked to. It feels better to rely on possessions than on relationships.
One way to overcome this barrier is to be proactively generous. First of all you may uncover in how many situations your assistance wouldn't go amiss. Moreover, having done a lot to support somebody else makes it easier to ask for help as well. But you will find that you don't even have to say something.