Someone, at some point, WILL find out. You may think you can hide it forever, I did too, but I was wrong. You can't. And unfortunately, people finding out can make things much worse...

Pretty obvious one here, but the scars. No more swimming, short sleeves/shorts/whatever, there's the constant worry of "Did I cover them?" "Did my shirt/pants slip, did someone see?" "Do they wonder why I wear long sleeves/pants all the time?" There's also the fact that they will probably always be there...even if you manage to leave SI in the past, that past is still with you...

The risk of people walking in on you in the middle of it...and even if the door is locked, them wondering why it's locked.

Being afraid to be alone, because you worry what you may do to yourself.

The stress of avoiding it. The very frequent urges even once you've stopped.

The stress of NOT avoiding it, and all that involves...

Distancing yourself from people so they won't find out.

Distancing yourself from people because you just don't care about them anymore. SI is all you care about.

Stealing things to hurt yourself with, from stores/family/friends...anyone.

The worry associated with stealing those things, and hoping people don't notice.

Weird one here: actually trying to hide your very high pain tolerance...or people wondering why you can use knives so easily, quickly, carelessly...because you're so used to them you know you won't accidentally get hurt.

Becoming self-destructive in other ways.

Skipping classes (in college in my case), because you can't possibly wait another hour to go hide in a bathroom stall and hurt yourself.

Consistently lowering self-esteem.

Spending time SI-ing instead of dealing with the actual problem and learning how to cope. So even more SI, even less coping skills.

Worsening depression/self-hatred/guilt/shame if you stop and then relapse.

The self-destructive downward spiral it can and often does turn your entire life into.

No longer caring about yourself.

No longer caring about your life.

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I'm sure I'll think of even more...that's enough for now.