BPCL is a negative Beta stock, when the index goes down it will go up. The chart patterns are very good in it on the weekly. You can hold it for a target of 700. Hold with a stop of 621.00.
You need not fear your positions, if you do so. You will attract what you fear, though the stock is good you may panic and close your position early before it makes its round.
If you use good money management and position sizing, your fear will be at bay. Since you are new to the market and losing money on paper creates emotional stress, but you learn from every move you make. Those are experiences exclusively tailor made for you. Start observing and learn even if you are making mistakes.
A mistake is a mistake only if done the second time, the first time it is learning. Fear not, you can take guidance from great experts on this forum, before and after you get into your positions.