Hey Souleh, I waited nine months between making the commitment and making the jump--work, opportunity, periodic uncertainty, and so on. During that time, I had some flashes of real terror (like visions of myself falling through space, arms and legs flailing). That's completely normal. We have deeply rooted instincts about height and falling that we challenge and surmount when we learn to skydive.
Remember: good training, good study, good equipment = fantastic first dive.
You may be nervous going up. I overcame it on the first dive with meditation, using a visualization of my dive flow as my mantra.
I'm still new and am overcoming newbie nervousness, in large part through the support of this forum.
Go forth and DO IT TO IT! You won't be sorry.
Mindy