That’s your mind telling you that. Hey, I’m no pick up expert or anything but it’s quite simple really. Put yourself out there and get experience. You didn’t become great at a game with a single playthrough and you didn’t learn english after one speaking/writing session. Basically, if you feel like you have no chance, you probably do, but you have to get experience. Also consider that many girls are exactly like you and feel hopeless. If neither of you approach, nothing will happen but if you look awkward/silly in front of her/take the first step, some sweet loving is about to go down.
Good call making a separate thread.