I Think I Lost my Mojo ..Help Me !?

Usually i am a very outgoing guy wont hesitate to talk to any girl i see but for the past 2 months i' am having a very hard time approaching females. 2months prior to all this, i was very focused on graduating and was also dating someone so i lost sight of meeting new people. Now that its all over, it seems like I back out of approaching females period !. And whenever i feel like im getting back into things , things dont work out or i get rejected, then im back to square one . I use to not care if i got rejected but now ..i just feel like i lost it. What should i do ?