Stay single until THIS happens
Put more succinctly, it's better to be single than in bad company.
For example, getting involved with someone who brings too much baggage with them is a recipe for trouble. Perhaps they were abused or cheated on their last relationship, which may have ended only a couple of weeks ago. That puts an undue amount of pressure on you. Not only do you have to support them emotionally as they continue to heal from the ordeal, but you'll likely be held to a higher standard -- only because the ill-fated relationship remains so fresh in their mind and they're looking to avoid getting hurt again.
People may try to convince you that opposites attract, but research shows the opposite: relationships that last the longest tend to be those where both partners share a lot in common, from their temperament and interests to their religious and political beliefs.
When two people are first getting to know each other, it is still too early for the baggage and dissimilarities to come into sharp focus. Instead, they lie dormant while both individuals idealize one another, making sure to put their best foot forward in hopes of getting another date.
Once the novelty begins to wear off and they grow more comfortable with each other, that's when the skeletons begin to come out of the closet. Disagreements and fighting become more common, and both of them begin to see a more authentic version of the person they're dating.
If just getting along with the other person begins to feel like a chore, that's when you know you're not right for one another.You're tidy while he's messy. You're careful with your money while he's always strapped for cash. You're always on time, but he's perpetually late to everything. All these things add up, grating on the other person and weighing down the relationship in the process.
Do not stay in or begin a relationship with someone who you know doesn't suit you. Even if find them very attractive, remember that it takes more than physical compatibility to keep a relationship afloat. It requires hard work, trust, and communication. If any of these elements are lacking, you're both in for a bumpy ride.