As a new trader with very small success with trading. 3% gain, going live will run you through a plethora of emotion(s). I believe it's critical to expose yourself to these feelings, simply even funding your account, and looking at your balance will give you an idea of things. You don't necessarily need to trade right away. I started with the minimum balance my broker requires, with money I could afford to lose, and a very conservative risk level on my trades. I found that when I placed trades over a certain amount, fear took over, so I would lower my lot sizes - and with the new sizes I placed, I felt very good with the risk vs reward ratios.
In addition, you need trading laws or rules - something like a checklist to verify before you place a trade. Checking these laws that align with your personal risk management style is key, and alleviates a ton of stress from yourself. Will you leave trades on while you sleep? Will you close out positions before you go to bed? Would you like to check your trades once in the morning, and then once at night? Hourly? Things like this, can help you be more comfortable with your trading, at least in my opinion.