Dealing with mental blocks
Step 1 - Check your thinking. It can be a as simple as just thinking "oh no I can't do this" that could be causing your mental block. Make sure you are thinking posititvely before you go for your tumble. If you tell yyourself you can't do it you won't be able too.
Step 2 - Visualise, see yourself doing the skills perfectly in your mind before you do them. Sometimes it can help if you watch others do the skills well and easily.
Step 3 - break it down, go back to the last way you can do the skill easily and work back through the drills, as soon as you hit a mental block go back one step and work back up.
Step 4 - What will make it easier? Adding an extra mat? Your coach standing in?
Step 5 - Ask for help. Perhaps from a different coach or a senior gymnasts, they may be able to see something others haven't seen or putt an idea into words that work for you.
Step 6 - Walk away, try again in 5 or 10 minutes or try again tomorrow.
Step 7 - have a back up plan. Don't let the mental block destroy your gymnastics. If you can't flic on beam find an alternative to work on as well like a front handspring or a round off. Have an alternative tumbling pass for floor or even just realise its only 1 apparatus and you can score well on others.