If you're a new writer trying to break into the traditional publishing market in the US or the UK, chances are you'll want the help of a literary agent. Not just any agent, one who likes your story and believes in it, because they're the ones who will be out there trying to sell it.
Tip #1 - One way to find the right agent is to connect with a whole bunch of them on Twitter and keep an eye on what kind of themes or ideas they're looking to represent.
The problem with connecting with a bunch of literary agents on Twitter is that, once the rejections start coming back, now you no longer have somewhere you can post your Tobias Crying in the Shower gif.
That's okay, the market is more competitive than ever these days. Honestly, I'm thankful for every agent who takes the time to write you back and say thanks for submitting. A rejection is far better than never hearing anything, and slightly worse than having an agent represent a story they don't have a true investment in. Good for everyone. The system works!
Tip #2 - Have a backup form of social media that you're confident no one will ever read, so you can let out your true emotions.