1. 𝘽𝙚 𝙨𝙩𝙧𝙤𝙣𝙜 𝙖𝙣𝙙 𝙝𝙚𝙖𝙡𝙩𝙝𝙮
You will need to become extremely buff. Get in the gym and remember Batman took a while to master his crafts, in some iterations he comes back to take on the mantle as Batman in his 30's. Take your time, eat healthy, don't take any harmful substances and make sure to stay consistent

2. 𝘽𝙚 𝙨𝙢𝙖𝙧𝙩 𝙖𝙣𝙙 𝙤𝙥𝙚𝙣 𝙩𝙤 𝙠𝙣𝙤𝙬𝙡𝙚𝙙𝙜𝙚
Batman is not only strong but smart, therefore you're going to have to finish school(BONUS POINTS FOR FURTHER EDUCATION). Batman is always open to learning new things and becoming smarter, it is crucial you are actively improving your intelligence so that those pesky villains don't stand a chance.

3. 𝘽𝙚 𝙖 𝙢𝙖𝙨𝙩𝙚𝙧 𝙘𝙡𝙖𝙨𝙨 𝙛𝙞𝙜𝙝𝙩𝙚𝙧
Batman has learned a majority of martial art techniques in order to protect himself from any criminals, therefore you should learn and master one too before you move onto the next. Less is more, remember the quote by Bruce Lee: "I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times."

4. 𝘽𝙚 𝙨𝙩𝙤𝙞𝙘 𝙖𝙣𝙙 𝙤𝙣𝙡𝙮 𝙨𝙝𝙤𝙬 𝙚𝙢𝙤𝙩𝙞𝙤𝙣 𝙬𝙝𝙚𝙣 𝙣𝙚𝙘𝙚𝙨𝙨𝙖𝙧𝙮
Batman has always been very stoic, he is calm and collected. This allows him to have an edge over his enemies. You should meditate and or pray, keep your cool under pressure at all times. Do not put your negative emotions on others, and share your positive ones with those around you.

5. 𝘽𝙚 𝙨𝙤𝙘𝙞𝙖𝙗𝙡𝙚 𝙖𝙣𝙙 𝙢𝙖𝙠𝙚 𝙛𝙧𝙞𝙚𝙣𝙙𝙨
There is a famous quote which goes like "Show me your friends, and I'll show you your future." You are a direct representation of your friends, therefore you should surround yourself by positive influences. Be kind to others as well as learn from others, Batman has created his own team in which he can rely on and seek guidance from. Batman has learned time and time again he doesn't have to do things all by himself.

6. 𝘽𝙚 𝙛𝙞𝙣𝙖𝙣𝙘𝙞𝙖𝙡𝙡𝙮 𝙨𝙩𝙖𝙗𝙡𝙚 𝙖𝙣𝙙 𝙥𝙧𝙤𝙫𝙞𝙙𝙚 𝙛𝙤𝙧 𝙮𝙤𝙪𝙧 𝙡𝙤𝙫𝙚𝙙 𝙤𝙣𝙚𝙨
Between you and me, I suspect Batman is a billionaire. This may seem far fetched but his utility, gadgets, vehicles and armour would require a lot of money. Therefore, you must be eager to make some money in order to not only fund your armoury but also your team/friends/family(This means you will have to get a job, you can no longer be unemployed). It is crucial you do not chase money to the point it dictates your entire life and you cannot enjoy the wonders of life.

7. 𝘽𝙚 𝙧𝙚𝙖𝙙𝙮 𝙩𝙤 𝙛𝙞𝙣𝙙 𝙤𝙪𝙩 𝙩𝙝𝙚 𝙘𝙧𝙞𝙢𝙚 𝙞𝙣 𝙮𝙤𝙪𝙧 𝙖𝙧𝙚𝙖 𝙬𝙞𝙡𝙡 𝙚𝙞𝙩𝙝𝙚𝙧 𝙝𝙖𝙫𝙚 𝙮𝙤𝙪 𝙠𝙞𝙡𝙡𝙚𝙙 𝙤𝙧 𝙗𝙤𝙧𝙚𝙙 𝙤𝙪𝙩 𝙤𝙛 𝙮𝙤𝙪𝙧 𝙢𝙞𝙣𝙙
Now you are ready to protect the city of Gotham. Now suit up and go beat up homeless criminals that are trying to make some dirty money, so that you can compensate for your mental trauma because your parents died(You were eight, you should have stopped them from shooting your parents).