stop thinking about it.. distract yourself.
stick to only neccessary activities...
water/fertilzie as needed with a good dry/wet cycle relative to your medium.
Don't fiddle with them. Train them, tie them down and get the f%$#k outa dodge.
Don't go in there and just stare.. keep your tent closed... it keeps pests out and other floaties in the air.
You get that urge that oyu have to do something but don'tknow the cause of the problem or whether it is right? ... just don't do it,lol.. the more you ignore your impulses, the sooner the anxiety goes away.
If you are afraid of dogs and don't want to be, you expose yourself to dogs until the anxiety goes away. In this cause, you ignore your impulse to do useless things to satiate your compulsion, the less you feel the need to do such things.
Your second grow, even if first is very successful, will be light-years better. you will avoid a lot of the impulse-caused mistakes. You'll set things up better, more organized etc etc... that too will alleviate most anxiety.. familiarity..
learning curve.. just traverse it and it gets easier... You'll be treating them like the one-legged, red-headed step-child you never had in no time.