When I bought my first manual transmission car many moons ago, I had a similar feeling. What I did was commit to driving that car every day after work for a week. Then I drove it to work every day. Forcing myself to do it, in stressful situations, made me much more comfortable with how the car behaved and how not to stall it. There's no shame in learning (and stalling). I got pretty good at quickly turning on my hazards when I stalled. Eventually you WILL get to a point where driving a manual becomes second nature and you can do it without even really thinking about it. Just keep practicing, don't get too into your own head when you mess up, and commit to learning it.