This is hard! So close to giving up

Debating if whether or not I should give up on breastfeeding because it's so hard! I'm currently waiting for my pump to come in the mail but meanwhile I've been pumping all that I can while at the hospital when is only when I really have the chance to being that mine hasn't came yet! I feel like giving up, letting it dry up. In tired of the painful let down sensation I get which is horrible & not being able to pump regularly every 2-3 hours due to not having a pump yet & the leakage of them! Should I give up or keep trying although I'm only able to pump 3-4 times a day max. Since baby isn't home yet ...