Re: How can I avoid making this trading mistake? It's giving me a headache
So I bought 10k worth of ETH because I wanted to begin swing trading with 10K for potential solid profits via swing trades. However, I had to wait a damn week on Coinbase to receive it. However, by the time I had finally received it, the value of ETH has gone down so I only got around $9,700. So basically from there on, Im down 300 dollars, which only left me with $9,700 to begin swing trading with. So let's say I dump all the $9,700 into an alt coin for a swing trade. So in this situation, I'm already down $300. I am not happy. Let's say hypothetically, the alt coin I want to swing trade is priced at 45 cents. If the coin goes up to 47 cents and sell, I would have made $431 in profit, but if you actually think about, I would only actually make barely over $100 in profit since I've spent $10,000 worth of ETH in the very first place and value of ETH had gone down. 
It's trading my friend and you have to deal with situations like this many times, so don't fear it must go and face it with a good trade plan and strong money management techniques. Other than this i will recommend you to go and buy when the accumulation starts and you can enter after a strong green candle form and confirm the uptrend starting so that you can add on your positions with the rise of the trend. If you can't control your emotions then i would request you to read the best books to control the emotions and human psychology and that is The Disciplined Trader by Mark Douglas which is one of a favourite collection of trading books.