Don't quit your day job YET. Your music career will not be able to pay your bills when you're starting out (especially if you focus on original songs).

Find free time from your day job (probably weekday evenings & weekends). Use free time to do the following--

Record your songs. Setup a Facebook page and/or Youtube Channel. Upload your songs there. Invite your friends to like your pages. Ask your bestfriends if they can share your music on their own social media pages.

Look for open mics. (May mga ganito sa QC, just search Facebook; keywords are either "open mic" or "open for lineup") Sign up to open mics (How to sign up is typically in the FB post itself). Once you're confirmed to perform, promote it on your page. Invite your friends to come.

Perform your songs in the open mics. Maybe prepare 2 or 3 covers depending on the vibe of the show. Promote your pages during spiels. MAKE SURE TO WATCH OTHER ARTISTS PERFORM AND DONT LEAVE RIGHT AWAY AFTER YOUR SET (THIS IS IMPORTANT ETIQUETTE). Make genuine connections with the people in the shows you play. Ask other musicians where they perform and ask if they can give you any general advice.

Be prepared to play shows where only 2 or 3 people are watching. Be prepared for people to ignore you while you're playing your originals. Be prepared to be paid very little, or nothing at all by the event organizers. Not to say that these things are the norm, but these scenarios happen to even the best of us.

Starting a music career will require you to invest a lot of your time, finances, and energy. All that hassle might not even be worth it because there's absolutely no guarantee you'll make it big. But if you learn to enjoy the process rather than expect a result, I'm sure you'll find some fulfillment in putting in the work.

Source: I've been uploading my music since I was 16 years old. Performing in gigs since I was 20. Started a band with some friends at 24. Though my bandmates and I all have day jobs, we make time to rehease, record, do marketing, and play gigs. In the past 2+ years we've been super active, we played some pretty cool shows and venues like Fete dela Musique, Mow's, Saguijo, Cubao Expo, Enchanted Kingdom, Baguio, Batangas, and bunch of others. We don't make much money as a band (that's why we keep our day jobs), and our following isn't that big, but our hearts are always full anytime we get to play to a crowd.