Super Power... With a Flaw

In your own mind, and no one else's.

I can stop world hunger with no consequences.

But the shipping and food production companies necessarily generated as a result of your power are facing financial ruin due to being so charity focused. You will need to find a way to save them, lest world hunger resume in full force.

I can cast Alter Self in real life.

but everybody can see through the illusion

i can cast wish an infinite amount of times

...but the DM always interprets it in the worst way possible.

I can talk to plants...

They don't understand you.

I can travel between parallel universes 

it give's you a massive hangover and uncontrollable diarrhea  every time.

I can time travel.

But only forwards in time, at the rate of 1 second every second

I can summon my phone to my hand from anywhere

...but you never have signal or Wi-Fi.

I am as elastic as Mr Fantastic

But you need to refill yourself with corn syrup or you will become solid.

I can see in the dark, as though it was brightly lit.

...But you're interruptions usually go wide because you can't think faster than the bullet moves.

My brain has over twenty times the processing power of the average person's brain, being able to think significantly quicker and more efficiently than even the greatest minds on the planet.

but it can only do that one time every decade

i can turn into any d&d race at will and back painlessly

With new body's you have to see-learn muscle memory.

I can burp the alphabet.

But only while sitting on a toilet in a public bathroom.

I can climb walls like a spider.

Because you can turn into a small normal spider.

My flatulence smells like fresh flowers.

Because they are the only thing that you can eat.

I can turn invisible when my family comes to visit.

But only when every single member of both your immediate and extended family is present.

I can alter the structure of any matter within 60 feet of me at will, changing its shape, chemical makeup, etc.

 You also have an old proffesser in your head constantly advising you, he is annoying.

I can read all languages.

But you can't speak any of them

I can cast Wish successfully at will with no ill effects (to myself, any others, the fabric of the universe etc.), can never lose the spell, and am not harassed for wishes like a Genie

...But the DM and other players have to drop out of the game because of unrelated real life events.
ALTERNATIVELY: ...Therefore, if your wish would harm yourself, others, or the fabric of the universe, even indirectly or in some minor way, the spell simply does nothing.

I can see through solid objects.